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

        body {
            font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8fafc;
        }

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

        /* Header */
        .header {
            background: linear-gradient(135deg, #1e40af 0%, #3730a3 50%, #1e40af 100%);
            color: white;
            text-align: center;
            padding: 60px 0;
            position: relative;
        }

        .header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #059669, #16a34a);
        }

        .header h1 {
            font-size: 3rem;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .header p {
            font-size: 1.2rem;
            opacity: 0.9;
        }

        /* Enhanced Search Container */
        .search-container {
            background: white;
            padding: 30px 0;
            border-bottom: 1px solid #e2e8f0;
            position: sticky;
            top: 0;
            z-index: 999;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .search-wrapper {
            position: relative;
            max-width: 600px;
            margin: 0 auto;
        }

        .search-input {
            width: 100%;
            padding: 15px 50px 15px 20px;
            border: 2px solid #e2e8f0;
            border-radius: 25px;
            font-size: 1rem;
            outline: none;
            transition: all 0.3s ease;
            background: #f8fafc;
        }

        .search-input:focus {
            border-color: #1e40af;
            background: white;
            box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
        }

        .search-icon {
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            color: #64748b;
            font-size: 1.2rem;
        }

        .search-suggestions {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: white;
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            margin-top: 5px;
            max-height: 300px;
            overflow-y: auto;
            z-index: 1000;
            display: none;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }

        .search-suggestion {
            padding: 12px 20px;
            cursor: pointer;
            transition: background-color 0.2s;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .search-suggestion:hover {
            background-color: #f8fafc;
        }

        .search-suggestion i {
            color: #1e40af;
            width: 20px;
        }

        .search-highlight {
            background: #fef3c7;
            padding: 2px 4px;
            border-radius: 3px;
            font-weight: 500;
        }

        /* Navigation */
        .nav-bar {
            background: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 998;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            overflow-x: auto;
            padding: 0;
            margin: 0;
        }

        .nav-menu li {
            white-space: nowrap;
        }

        .nav-link {
            display: block;
            padding: 20px 24px;
            text-decoration: none;
            color: #64748b;
            font-weight: 500;
            transition: all 0.3s ease;
            border-bottom: 3px solid transparent;
        }

        .nav-link:hover,
        .nav-link.active {
            color: #1e40af;
            border-bottom-color: #1e40af;
            background-color: #f8fafc;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: #64748b;
            cursor: pointer;
            padding: 20px;
        }

        /* Main Content */
        .main-content {
            padding: 40px 0;
            min-height: calc(100vh - 200px);
        }

        .guide-section {
            display: none;
            animation: fadeIn 0.5s ease-in-out;
        }

        .guide-section.active {
            display: block;
        }

        .guide-section h2 {
            color: #1e40af;
            font-size: 2.5rem;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #e2e8f0;
        }

        /* Screenshot Container and Image Styling */
        .screenshot-container {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            margin: 30px 0;
            text-align: center;
        }

        .screenshot-container h4 {
            color: #1e40af;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }

        .screenshot-container img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            border: 2px solid #e2e8f0;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .screenshot-container img:hover {
            transform: scale(1.02);
            box-shadow: 0 12px 30px rgba(0,0,0,0.2);
        }

        .screenshot-caption {
            background: #1e40af;
            color: white;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 0.9rem;
            display: inline-block;
            margin-top: 15px;
        }

        /* Cards */
        .intro-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            margin-bottom: 40px;
            border-left: 4px solid #059669;
        }

        .intro-card h3 {
            color: #059669;
            margin-bottom: 15px;
            font-size: 1.5rem;
        }

        /* Features Grid */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
            margin-bottom: 40px;
        }

        .feature-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            text-align: center;
            transition: transform 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-5px);
        }

        .feature-card i {
            font-size: 3rem;
            color: #1e40af;
            margin-bottom: 20px;
        }

        .feature-card h4 {
            color: #1e40af;
            margin-bottom: 15px;
            font-size: 1.3rem;
        }

        /* Steps */
        .step-by-step {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            margin-bottom: 40px;
        }

        .step-by-step h3 {
            color: #1e40af;
            margin-bottom: 25px;
            font-size: 1.5rem;
        }

        .steps {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .step {
            display: flex;
            align-items: flex-start;
            gap: 20px;
        }

        .step-number {
            background: #1e40af;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }

        .step-content h4 {
            color: #1e40af;
            margin-bottom: 5px;
        }

        /* Detailed Steps */
        .steps-detailed {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px;
            background: #f8fafc;
            border-radius: 12px;
            border-left: 4px solid #1e40af;
        }

        .step-badge {
            background: #1e40af;
            color: white;
            width: 35px;
            height: 35px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .step-item h4 {
            color: #1e40af;
            margin-bottom: 8px;
            font-size: 1.1rem;
        }

        /* Warning and Info Boxes */
        .warning-box {
            background: #fef3c7;
            border: 1px solid #f59e0b;
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 30px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .warning-box i {
            color: #f59e0b;
            font-size: 1.5rem;
        }

        .tip-box {
            background: #ecfdf5;
            border: 1px solid #059669;
            border-radius: 12px;
            padding: 20px;
            margin-top: 30px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .tip-box i {
            color: #059669;
            font-size: 1.5rem;
        }

        .instruction-box {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            margin-bottom: 30px;
        }

        /* Setup Options */
        .setup-options {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .option-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            border: 2px solid #e2e8f0;
            transition: all 0.3s ease;
        }

        .option-card:hover {
            border-color: #1e40af;
            transform: translateY(-3px);
        }

        .option-card.recommended {
            border-color: #059669;
            background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
        }

        .option-card i {
            font-size: 2.5rem;
            color: #1e40af;
            margin-bottom: 20px;
        }

        .option-card h3 {
            color: #1e40af;
            margin-bottom: 15px;
            font-size: 1.3rem;
        }

        .option-card ul {
            margin: 15px 0;
            padding-left: 20px;
        }

        .option-card li {
            margin-bottom: 8px;
        }

        .steps-mini {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #e2e8f0;
        }

        .steps-mini ol {
            margin-top: 10px;
            padding-left: 20px;
        }

        /* Assessment Types */
        .assessment-types {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .type-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            border-left: 4px solid #1e40af;
        }

        .type-card i {
            font-size: 2.5rem;
            color: #1e40af;
            margin-bottom: 20px;
        }

        .type-card h3 {
            color: #1e40af;
            margin-bottom: 25px;
            font-size: 1.5rem;
        }

        .type-info,
        .features {
            margin-bottom: 25px;
        }

        .type-info h4,
        .features h4 {
            color: #059669;
            margin-bottom: 15px;
            font-size: 1.1rem;
        }

        .type-info ol,
        .features ul {
            padding-left: 20px;
        }

        .type-info li,
        .features li {
            margin-bottom: 8px;
        }

        /* Info Grids */
        .info-grid,
        .dashboard-info {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .info-item {
            background: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            text-align: center;
        }

        .info-item i {
            font-size: 2rem;
            color: #1e40af;
            margin-bottom: 15px;
        }

        .info-item h4 {
            color: #1e40af;
            margin-bottom: 10px;
            font-size: 1.1rem;
        }

        /* Marking Rules */
        .marking-rules {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-bottom: 30px;
        }

        .rule-card {
            background: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            border-left: 4px solid #059669;
        }

        .rule-card i {
            font-size: 1.5rem;
            color: #059669;
            margin-bottom: 15px;
        }

        .rule-card h4 {
            color: #059669;
            margin-bottom: 15px;
            font-size: 1.2rem;
        }

        .rule-card ul {
            padding-left: 20px;
        }

        .rule-card li {
            margin-bottom: 8px;
        }

        /* Keyboard Shortcuts */
        .keyboard-shortcuts {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            margin-top: 30px;
        }

        .keyboard-shortcuts h3 {
            color: #1e40af;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }

        .shortcut-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .shortcut-item {
            text-align: center;
            padding: 20px;
            background: #f8fafc;
            border-radius: 12px;
            border: 2px solid #e2e8f0;
        }

        .shortcut-item kbd {
            background: #1e40af;
            color: white;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: bold;
            display: block;
            margin-bottom: 10px;
        }

        /* Analytics */
        .analytics-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin-bottom: 40px;
        }

        .analytics-guide {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            margin-top: 30px;
        }

        .metric-explanation {
            margin-bottom: 30px;
        }

        .metric-explanation h4 {
            color: #1e40af;
            margin-bottom: 15px;
            font-size: 1.2rem;
        }

        .metric-explanation ul {
            padding-left: 20px;
        }

        .metric-explanation li {
            margin-bottom: 8px;
        }

        /* Export Options */
        .export-options {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .file-info {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        /* Subsections */
        .subsection {
            margin-bottom: 40px;
        }

        .subsection h3 {
            color: #059669;
            font-size: 1.5rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
        }

        /* Feature Lists */
        .feature-list {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 15px 0;
            border-bottom: 1px solid #e2e8f0;
        }

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

        .feature-item i {
            color: #1e40af;
            font-size: 1.3rem;
        }

        /* Register Info */
        .register-info {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        .info-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            border-left: 4px solid #059669;
        }

        .info-card i {
            font-size: 2rem;
            color: #059669;
            margin-bottom: 20px;
        }

        .info-card h4 {
            color: #059669;
            margin-bottom: 15px;
            font-size: 1.3rem;
        }

        .info-card ul {
            margin-top: 15px;
            padding-left: 20px;
        }

        .info-card li {
            margin-bottom: 8px;
        }

        .example-box {
            background: #f8fafc;
            padding: 20px;
            border-radius: 12px;
            border: 2px solid #e2e8f0;
            font-family: monospace;
            font-size: 0.9rem;
            line-height: 1.8;
        }

        /* Search Notification */
        .search-notification {
            position: fixed;
            top: 100px;
            right: 20px;
            background: #059669;
            color: white;
            padding: 15px 25px;
            border-radius: 10px;
            font-size: 0.9rem;
            z-index: 1000;
            opacity: 0;
            transform: translateX(100%);
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(5, 150, 105, 0.3);
        }

        .search-notification.show {
            opacity: 1;
            transform: translateX(0);
        }

        .search-notification i {
            margin-right: 8px;
        }

        /* Footer */
        .footer {
            background: #1e293b;
            color: white;
            text-align: center;
            padding: 20px 0;
            margin-top: 60px;
        }

        /* Footer Link Styling - UPDATED */
        .footer a {
            color: white;
            text-decoration: none;
            transition: opacity 0.3s ease;
        }

        .footer a:hover {
            opacity: 0.8;
        }

        /* Animations */
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateX(-20px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        /* Back to Top Button */
        .back-to-top {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background: #059669;
            color: white;
            border: none;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1.2rem;
            box-shadow: 0 4px 20px rgba(5, 150, 105, 0.3);
            z-index: 1000;
            transition: all 0.3s ease;
            opacity: 0;
            visibility: hidden;
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }

        /* Progress Indicator */
        .progress-indicator {
            position: fixed;
            top: 0;
            left: 0;
            height: 4px;
            background: #1e40af;
            z-index: 1001;
            transition: width 0.3s ease;
            width: 0%;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .header h1 {
                font-size: 2rem;
            }
            
            .header p {
                font-size: 1rem;
            }
            
            .menu-toggle {
                display: block;
            }
            
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-link {
                border-bottom: 1px solid #e2e8f0;
                border-left: none;
            }
            
            .nav-link:hover,
            .nav-link.active {
                border-left: 4px solid #1e40af;
                border-bottom: 1px solid #e2e8f0;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
            }
            
            .setup-options {
                grid-template-columns: 1fr;
            }
            
            .assessment-types {
                grid-template-columns: 1fr;
            }
            
            .register-info {
                grid-template-columns: 1fr;
            }
            
            .steps {
                gap: 15px;
            }
            
            .step {
                flex-direction: column;
                text-align: center;
            }
            
            .step-number {
                align-self: center;
            }

            .search-wrapper {
                max-width: 90%;
            }

            .search-notification {
                right: 10px;
                left: 10px;
                text-align: center;
            }

            .screenshot-container {
                padding: 20px;
            }

            .screenshot-container img {
                border-radius: 8px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            
            .header {
                padding: 40px 0;
            }
            
            .header h1 {
                font-size: 1.8rem;
            }
            
            .guide-section h2 {
                font-size: 2rem;
            }
            
            .nav-link {
                padding: 15px 20px;
                font-size: 0.9rem;
            }
            
            .intro-card,
            .instruction-box,
            .keyboard-shortcuts {
                padding: 20px;
            }
            
            .feature-card {
                padding: 20px;
            }
            
            .feature-card i {
                font-size: 2.5rem;
            }
            
            .step-item {
                padding: 15px;
            }
            
            .shortcut-grid {
                grid-template-columns: 1fr;
            }

            .search-container {
                padding: 20px 0;
            }

            .screenshot-container {
                padding: 15px;
            }

            .screenshot-container h4 {
                font-size: 1.1rem;
            }
        }