    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }
        
        .navbar {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    position: relative;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: 0;
    overflow: visible;
}

.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -30px;
    width: 60px;
    height: 100%;
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    border-radius: 50px 0 0 50px;
    z-index: -1;
}

.navbar::after {
    content: '';
    position: absolute;
    top: 0;
    right: -30px;
    width: 60px;
    height: 100%;
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    border-radius: 0 50px 50px 0;
    z-index: -1;
}

.navbar .container {
    position: relative;
    z-index: 2;
    padding: 15px 30px;
    margin: 0 auto;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: white !important;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
}

.navbar-brand i {
    font-size: 1.3rem;
    margin-right: 8px;
}

.navbar-nav .nav-link {
    color: rgba(255,255,255,0.9) !important;
    font-weight: 500;
    padding: 8px 15px !important;
    border-radius: 20px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
}

.navbar-nav .nav-link:hover {
    color: white !important;
    background-color: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

.navbar-nav .nav-link i {
    font-size: 0.9rem;
}

/* Ensure the ribbon spans full width */
body {
    margin: 0;
    padding: 0;
}

/* Alternative version with more pronounced curves */
.navbar-ribbon-curved {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    position: relative;
    margin: 0 -40px;
    padding: 0;
    border-radius: 40px;
    overflow: visible;
}

.navbar-ribbon-curved .container {
    padding: 15px 60px;
    margin: 0 auto;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .navbar::before,
    .navbar::after {
        width: 30px;
        left: -15px;
        right: -15px;
    }
    
    .navbar::after {
        right: -15px;
    }
    
    .navbar .container {
        padding: 12px 20px;
    }
    
    .navbar-brand {
        font-size: 1.3rem;
    }
    
    .navbar-nav .nav-link {
        padding: 6px 10px !important;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .navbar::before,
    .navbar::after {
        display: none;
    }
    
    .navbar {
        border-radius: 20px;
        margin: 10px;
    }
}

        .mcontainer {
            max-width: 1000px;
            margin: 0 auto;
            background: white;
            border-radius: 15px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            overflow: hidden;
        }

        .header {
            background: linear-gradient(135deg, #ff6b6b 0%, #ffa500 100%);
            color: white;
            padding: 30px;
            text-align: center;
        }

        .header h1 {
            font-size: 2.2em;
            margin-bottom: 10px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }

        .header p {
            font-size: 1.1em;
            opacity: 0.9;
        }

        .content {
            padding: 30px;
        }

        .objective {
            background: #e8f5e8;
            border-left: 5px solid #28a745;
            padding: 20px;
            margin-bottom: 30px;
            border-radius: 5px;
        }

        .task-description {
            background: #f8f9fa;
            border-left: 5px solid #ffa500;
            padding: 20px;
            margin-bottom: 30px;
            border-radius: 5px;
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 15px 0;
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .data-table th,
        .data-table td {
            padding: 12px;
            text-align: center;
            border-bottom: 1px solid #dee2e6;
        }

        .data-table th {
            background: #ffa500;
            color: white;
            font-weight: bold;
        }

        .data-table tr:nth-child(even) {
            background: #f8f9fa;
        }

        .guide-section {
            background: #fff3cd;
            border-left: 5px solid #ffc107;
            padding: 20px;
            margin-bottom: 30px;
            border-radius: 5px;
        }

        .guide-toggle {
            background: #ffc107;
            color: #212529;
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1em;
            margin: 10px 0;
            transition: background-color 0.3s ease;
            font-weight: bold;
        }

        .guide-toggle:hover {
            background: #e0a800;
        }

        .guide-content {
            display: none;
            margin-top: 20px;
        }

        .guide-step {
            background: white;
            padding: 20px;
            margin-bottom: 20px;
            border-radius: 8px;
            border: 1px solid #e9ecef;
        }

        .guide-step h4 {
            color: #ffa500;
            margin-bottom: 15px;
            font-size: 1.2em;
        }

        .guide-step h5 {
            color: #495057;
            margin: 15px 0 10px 0;
            font-size: 1.1em;
        }

        .criterion-types {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 15px;
            margin-top: 15px;
        }

        .criterion-type {
            background: #f8f9fa;
            padding: 15px;
            border-radius: 8px;
            border-left: 4px solid #28a745;
        }

        .criterion-type h5 {
            color: #28a745;
            margin-bottom: 10px;
        }

        .criterion-type p {
            margin-bottom: 8px;
            font-size: 0.95em;
        }

        .example-box {
            background: #e7f3ff;
            padding: 15px;
            border-radius: 5px;
            margin: 10px 0;
            border-left: 4px solid #007bff;
        }

        .do-dont {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin: 15px 0;
        }

        .do-box {
            background: #d4edda;
            padding: 15px;
            border-radius: 8px;
            border-left: 4px solid #28a745;
        }

        .dont-box {
            background: #f8d7da;
            padding: 15px;
            border-radius: 8px;
            border-left: 4px solid #dc3545;
        }

        .do-box h6, .dont-box h6 {
            margin-bottom: 10px;
            font-weight: bold;
        }

        .do-box h6 {
            color: #28a745;
        }

        .dont-box h6 {
            color: #dc3545;
        }

        .student-response {
            background: #f8f9fa;
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 30px;
            line-height: 1.8;
            font-size: 1.1em;
            border: 2px dashed #6c757d;
        }

        .question-section {
            background: #e3f2fd;
            padding: 20px;
            margin: 20px 0;
            border-radius: 8px;
            border-left: 4px solid #2196f3;
        }

        .question {
            margin: 15px 0;
            padding: 15px;
            background: white;
            border-radius: 5px;
            border: 1px solid #dee2e6;
        }

        .question h4 {
            color: #2196f3;
            margin-bottom: 10px;
        }

        .answer-input {
            width: 100%;
            min-height: 80px;
            padding: 10px;
            border: 2px solid #dee2e6;
            border-radius: 5px;
            font-family: inherit;
            font-size: 1em;
            resize: vertical;
        }

        .answer-input:focus {
            outline: none;
            border-color: #2196f3;
            box-shadow: 0 0 10px rgba(33, 150, 243, 0.3);
        }

        .buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            margin: 30px 0;
            flex-wrap: wrap;
        }

        .btn {
            padding: 12px 25px;
            border: none;
            border-radius: 8px;
            font-size: 1em;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #ff6b6b 0%, #ffa500 100%);
            color: white;
        }

        .btn-secondary {
            background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
            color: #333;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }

        .answer-key {
            background: #e7f3ff;
            border-left: 5px solid #007bff;
            padding: 20px;
            margin-top: 30px;
            border-radius: 5px;
            display: none;
        }

        .answer-key h3 {
            color: #007bff;
            margin-bottom: 15px;
        }

        .answer-item {
            background: white;
            padding: 15px;
            margin: 15px 0;
            border-radius: 8px;
            border: 1px solid #dee2e6;
        }

        .answer-item h4 {
            color: #007bff;
            margin-bottom: 10px;
        }

        .model-response {
            background: #d4edda;
            border-left: 5px solid #28a745;
            padding: 20px;
            margin-top: 30px;
            border-radius: 5px;
            display: none;
        }

        .model-response h3 {
            color: #28a745;
            margin-bottom: 15px;
        }

        .highlighted-text {
            background: yellow;
            padding: 2px 4px;
            border-radius: 3px;
        }

        .feedback {
            margin-top: 20px;
            padding: 15px;
            border-radius: 8px;
            text-align: center;
            display: none;
        }

        .feedback.show {
            display: block;
            background-color: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        @media (max-width: 768px) {
            .container {
                margin: 10px;
            }
            
            .header, .content {
                padding: 20px;
            }
            
            .buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 200px;
            }

            .criterion-types {
                grid-template-columns: 1fr;
            }

            .do-dont {
                grid-template-columns: 1fr;
            }

            .data-table {
                font-size: 0.9em;
            }
        }
    </style>