* {
            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: #f8f9fa;
            padding-top: 80px; 
        }
        a {
            text-decoration: none;
            color: #1a73e8;
        }
        a:hover {
            color: #0d47a1;
        }
        ul, ol {
            padding-left: 20px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .header {
            background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
            color: white;
            padding: 1rem 0;
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 700;
            color: #bbdefb;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: white;
            transform: scale(1.05);
            transition: transform 0.3s ease;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: #bbdefb;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #1a237e;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: #bbdefb;
            padding: 0.75rem;
            border-bottom: 1px solid #283593;
        }
        .nav-mobile a:hover {
            background-color: #283593;
            color: white;
        }
        .breadcrumb {
            background-color: #e3f2fd;
            padding: 0.75rem 20px;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #1a73e8;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .content {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            align-self: start;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #bbdefb;
        }
        h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #5c6bc0;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            line-height: 1.8;
        }
        .highlight {
            background-color: #e3f2fd;
            padding: 1.5rem;
            border-left: 5px solid #1a73e8;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3em;
        }
        strong {
            color: #1a237e;
        }
        .image-container {
            margin: 2rem auto;
            text-align: center;
        }
        .image-container img {
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            max-width: 800px;
            margin: 0 auto;
        }
        .image-container figcaption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
        }
        .link-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 2rem 0;
        }
        .link-list li {
            background: #f1f8ff;
            padding: 0.75rem 1.5rem;
            border-radius: 50px;
            transition: all 0.3s ease;
        }
        .link-list li:hover {
            background: #1a73e8;
            transform: translateY(-3px);
        }
        .link-list li a {
            color: #1a237e;
            font-weight: 500;
        }
        .link-list li:hover a {
            color: white;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #666;
            text-align: right;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #ddd;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #333;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.75rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #1a73e8;
            outline: none;
        }
        .btn {
            background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
            color: white;
            padding: 0.75rem 1.5rem;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 100%;
        }
        .btn:hover {
            background: linear-gradient(135deg, #0d47a1 0%, #1a73e8 100%);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }
        .rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffc107;
        }
        .rating input:checked ~ label {
            color: #ffc107;
        }
        .footer {
            background: #1a237e;
            color: white;
            padding: 3rem 20px 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: #bbdefb;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 0.75rem;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateX(5px);
        }
        friend-link a {
            color: #bbdefb;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #283593;
            font-size: 0.9rem;
            color: #bbdefb;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 480px) {
            .content, .sidebar {
                padding: 1.5rem;
            }
            .link-list {
                flex-direction: column;
                align-items: center;
            }
            .link-list li {
                width: 100%;
                text-align: center;
            }
        }