* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f7fa;
            padding: 0;
            margin: 0;
        }
        a {
            color: #2a7d8c;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1a5f6b;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a472a 0%, #2d5a3e 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: #ffd700;
            text-transform: uppercase;
            letter-spacing: 2px;
            font-family: 'Impact', 'Arial Black', sans-serif;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }
        .logo a:hover {
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        nav a:hover {
            background-color: rgba(255, 255, 255, 0.2);
            text-decoration: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9f5f7;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: #666;
        }
        main {
            padding: 2rem 0;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin-top: 1rem;
        }
        article {
            padding: 0 2rem;
        }
        h1 {
            font-size: 3rem;
            color: #1a472a;
            margin-bottom: 1.5rem;
            text-align: center;
            border-bottom: 4px solid #ffd700;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #2d5a3e;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid #2a7d8c;
        }
        h3 {
            font-size: 1.8rem;
            color: #3a7d5a;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #4a8d6a;
            margin-top: 1.5rem;
            margin-bottom: 0.6rem;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
            line-height: 1.8;
            text-align: justify;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1rem;
            border-left: 4px solid #ffd700;
            margin: 1.5rem 0;
            font-style: italic;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .feature-image {
            margin: 2rem auto;
            text-align: center;
            max-width: 800px;
        }
        .feature-image img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            border: 5px solid #2d5a3e;
        }
        .img-caption {
            margin-top: 0.8rem;
            font-style: italic;
            color: #666;
            font-size: 0.95rem;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
            padding: 2rem;
            background-color: #f0f8ff;
            border-radius: 10px;
            border: 2px dashed #2a7d8c;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2d5a3e;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #2a7d8c;
            outline: none;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            background: linear-gradient(to right, #2a7d8c, #1a5f6b);
            color: white;
            padding: 0.8rem 2rem;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease, transform 0.2s ease;
        }
        .btn:hover {
            background: linear-gradient(to right, #1a5f6b, #2a7d8c);
            transform: translateY(-3px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin-top: 0.5rem;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffd700;
        }
        footer {
            background-color: #1a472a;
            color: white;
            padding: 2rem 0;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: #ffd700;
            font-size: 1.5rem;
            margin-bottom: 1rem;
            border-bottom: 2px solid #2a7d8c;
            padding-bottom: 0.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #a3d9ff;
        }
        friend-link a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #2d5a3e;
            font-size: 0.9rem;
            color: #ccc;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: flex-start;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 20px;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #2d5a3e;
                padding: 1rem;
                margin-top: 1rem;
                border-radius: 8px;
            }
            nav ul.active {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            article {
                padding: 0 1rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
                padding: 1.5rem;
            }
        }