:root {
            /* Light theme variables */
            --bg-color-light: #f8f9fa;
            --text-color-light: #2c3e50;
            --card-bg-light: #ffffff;
            --primary-light: #4361ee;
            --secondary-light: #3a0ca3;
            --accent-light: #7209b7;
            --border-light: #e9ecef;
            --shadow-light: rgba(149, 157, 165, 0.1);
            --vip-gold: #d4af37;
            
            /* Dark theme variables */
            --bg-color-dark: #0f172a;
            --text-color-dark: #e2e8f0;
            --card-bg-dark: #1e293b;
            --primary-dark: #6366f1;
            --secondary-dark: #8b5cf6;
            --accent-dark: #a855f7;
            --border-dark: #334155;
            --shadow-dark: rgba(0, 0, 0, 0.3);
            
            /* Common variables */
            --transition: all 0.3s ease;
            --border-radius: 12px;
            --box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
            --box-shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.15);
            --vip-gradient: linear-gradient(135deg, #d4af37, #f7ef8a);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            transition: background-color 0.3s ease, color 0.2s ease, border-color 0.3s ease;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-color-light);
            color: var(--text-color-light);
            line-height: 1.6;
            transition: var(--transition);
        }
        
        body.dark-mode {
            background-color: var(--bg-color-dark);
            color: var(--text-color-dark);
        }
        
        /* Header & Navigation */
        header {
            padding: 1.5rem 5%;
            background-color: var(--card-bg-light);
            box-shadow: 0 4px 12px var(--shadow-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .dark-mode header {
            background-color: var(--card-bg-dark);
            box-shadow: 0 4px 12px var(--shadow-dark);
        }
        
        .logo {
            font-family: 'Poppins', sans-serif;
            font-weight: 800;
            font-size: 1.8rem;
            background: var(--vip-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .nav-links {
            display: flex;
            gap: 2rem;
            align-items: center;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--text-color-light);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
        }
        
        .dark-mode .nav-links a {
            color: var(--text-color-dark);
        }
        
        .nav-links a:hover {
            color: var(--primary-light);
        }
        
        .dark-mode .nav-links a:hover {
            color: var(--primary-dark);
        }
        
        .nav-links a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background: var(--vip-gradient);
            transition: width 0.3s;
        }
        
        .nav-links a:hover:after {
            width: 100%;
        }
        
        .vip-badge {
            background: var(--vip-gradient);
            color: #000;
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .mode-toggle {
            display: flex;
            align-items: center;
            background: var(--border-light);
            border-radius: 50px;
            padding: 0.3rem;
            cursor: pointer;
            position: relative;
            width: 60px;
            height: 30px;
        }
        
        .dark-mode .mode-toggle {
            background: var(--border-dark);
        }
        
        .toggle-slider {
            position: absolute;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            left: 3px;
            transition: transform 0.3s;
        }
        
        .dark-mode .toggle-slider {
            background: var(--primary-dark);
            transform: translateX(30px);
        }
        
        .toggle-icon {
            position: absolute;
            font-size: 0.9rem;
        }
        
        .sun-icon {
            left: 8px;
            color: #ffaa00;
        }
        
        .moon-icon {
            right: 8px;
            color: #a78bfa;
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-color-light);
            cursor: pointer;
        }
        
        .dark-mode .mobile-menu-btn {
            color: var(--text-color-dark);
        }
        
        /* Updated Hero Section - Search Below Heading */
        .hero {
            padding: 4rem 5% 6rem;
            text-align: center;
            background: linear-gradient(135deg, #4361ee15 0%, #3a0ca310 100%);
            position: relative;
            overflow: hidden;
        }
        
        .dark-mode .hero {
            background: linear-gradient(135deg, #6366f110 0%, #8b5cf610 100%);
        }
        
        .vip-system-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--vip-gradient);
            color: #000;
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        
        .hero h1 {
            font-family: 'Poppins', sans-serif;
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            background: linear-gradient(to right, var(--primary-light), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .dark-mode .hero h1 {
            background: linear-gradient(to right, var(--primary-dark), var(--accent-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .hero-description {
            font-size: 1.3rem;
            margin-bottom: 3rem;
            opacity: 0.9;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }
        
        /* Search Section - Below Hero Content */
        .search-section {
            max-width: 700px;
            margin: 0 auto;
        }
        
        .search-card {
            background-color: var(--card-bg-light);
            border-radius: var(--border-radius);
            padding: 2.5rem;
            box-shadow: var(--box-shadow-heavy);
            border: 1px solid var(--border-light);
        }
        
        .dark-mode .search-card {
            background-color: var(--card-bg-dark);
            border-color: var(--border-dark);
            box-shadow: 0 15px 35px var(--shadow-dark);
        }
        
        .search-card h3 {
            font-family: 'Poppins', sans-serif;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.8rem;
        }
        
        .search-input-group {
            margin-bottom: 1.5rem;
        }
        
        .search-input-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            font-size: 1rem;
            text-align: left;
        }
        
        .search-input {
            width: 100%;
            padding: 1.2rem 1.5rem;
            border-radius: 10px;
            border: 2px solid var(--border-light);
            background-color: var(--bg-color-light);
            font-size: 1rem;
            color: var(--text-color-light);
            transition: var(--transition);
        }
        
        .dark-mode .search-input {
            background-color: var(--bg-color-dark);
            border-color: var(--border-dark);
            color: var(--text-color-dark);
        }
        
        .search-input:focus {
            outline: none;
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
        }
        
        .dark-mode .search-input:focus {
            border-color: var(--primary-dark);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
        }
        
        .search-btn {
            width: 100%;
            padding: 1.2rem;
            background: linear-gradient(to right, var(--primary-light), var(--secondary-light));
            color: white;
            border: none;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 0.8rem;
            transition: var(--transition);
        }
        
        .dark-mode .search-btn {
            background: linear-gradient(to right, var(--primary-dark), var(--secondary-dark));
        }
        
        .search-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(67, 97, 238, 0.3);
        }
        
        .dark-mode .search-btn:hover {
            box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
        }
        
        .helper-text {
            margin-top: 1rem;
            font-size: 0.9rem;
            opacity: 0.8;
            text-align: center;
        }
        
        /* Main Content Sections */
        .container {
            padding: 5rem 5%;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .section-title {
            font-family: 'Poppins', sans-serif;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            text-align: center;
        }
        
        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto 3rem;
        }
        
        .section-intro {
            font-size: 1.2rem;
            margin-bottom: 3rem;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        
        .card {
            background-color: var(--card-bg-light);
            border-radius: var(--border-radius);
            padding: 2rem;
            box-shadow: var(--box-shadow);
            border: 1px solid var(--border-light);
            height: 100%;
        }
        
        .dark-mode .card {
            background-color: var(--card-bg-dark);
            border-color: var(--border-dark);
        }
        
        .card-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            color: white;
        }
        
        .dark-mode .card-icon {
            background: linear-gradient(135deg, var(--primary-dark), var(--accent-dark));
        }
        
        .card h3 {
            font-family: 'Poppins', sans-serif;
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        
        /* Feature Grids */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin-bottom: 4rem;
        }
        
        .three-col-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-bottom: 4rem;
        }
        
        .two-col-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
            margin-bottom: 4rem;
        }
        
        /* Steps Section */
        .steps-container {
            counter-reset: step-counter;
        }
        
        .step {
            display: flex;
            margin-bottom: 2.5rem;
            position: relative;
            padding-left: 80px;
        }
        
        .step:before {
            counter-increment: step-counter;
            content: counter(step-counter);
            position: absolute;
            left: 0;
            top: 0;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Poppins', sans-serif;
            font-weight: 700;
            font-size: 1.5rem;
        }
        
        .dark-mode .step:before {
            background: linear-gradient(135deg, var(--primary-dark), var(--secondary-dark));
        }
        
        .step-content h4 {
            font-family: 'Poppins', sans-serif;
            font-size: 1.4rem;
            margin-bottom: 0.8rem;
        }
        
        /* Security Highlight */
        .security-highlight {
            background: linear-gradient(135deg, #4361ee20 0%, #3a0ca320 100%);
            border-radius: var(--border-radius);
            padding: 3rem;
            margin-bottom: 4rem;
            border-left: 5px solid var(--vip-gold);
        }
        
        .dark-mode .security-highlight {
            background: linear-gradient(135deg, #6366f120 0%, #8b5cf620 100%);
        }
        
        /* Conclusion Section */
        .conclusion {
            text-align: center;
            padding: 4rem;
            border-radius: var(--border-radius);
            background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
            color: white;
            margin-bottom: 3rem;
        }
        
        .dark-mode .conclusion {
            background: linear-gradient(135deg, var(--primary-dark), var(--secondary-dark));
        }
        
        .conclusion h2 {
            font-family: 'Poppins', sans-serif;
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
        }
        
        .conclusion-btn {
            display: inline-block;
            background: white;
            color: var(--primary-light);
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            text-decoration: none;
            margin-top: 2rem;
            transition: var(--transition);
        }
        
        .conclusion-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }
        
        /* Footer */
        footer {
            background-color: var(--card-bg-light);
            padding: 3rem 5%;
            text-align: center;
            border-top: 1px solid var(--border-light);
        }
        
        .dark-mode footer {
            background-color: var(--card-bg-dark);
            border-top-color: var(--border-dark);
        }
        
        .footer-logo {
            font-family: 'Poppins', sans-serif;
            font-weight: 800;
            font-size: 2rem;
            background: var(--vip-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1.5rem;
        }
        
        .copyright {
            margin-top: 2rem;
            opacity: 0.8;
            font-size: 0.9rem;
        }
        
        /* Mobile Responsive */
        @media (max-width: 1100px) {
            .three-col-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 900px) {
            .nav-links {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero-description {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .three-col-grid, .two-col-grid {
                grid-template-columns: 1fr;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .hero h1 {
                font-size: 2.2rem;
            }
            
            .step {
                padding-left: 70px;
            }
            
            .step:before {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
            }
            
            .search-card {
                padding: 1.8rem;
            }
        }
        
        @media (max-width: 480px) {
            .container, .hero {
                padding-left: 5%;
                padding-right: 5%;
            }
            
            .hero {
                padding-top: 2rem;
                padding-bottom: 4rem;
            }
            
            .hero h1 {
                font-size: 1.9rem;
            }
            
            .card {
                padding: 1.5rem;
            }
            
            .security-highlight {
                padding: 1.5rem;
            }
            
            .conclusion {
                padding: 2rem;
            }
            
            .conclusion h2 {
                font-size: 1.8rem;
            }
        }
        
        /* Animation for fade-in */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }