* {
            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: 0;
            margin: 0;
        }
        a {
            text-decoration: none;
            color: #0066cc;
        }
        a:hover {
            color: #ff9900;
        }
        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, #1a237e, #4a148c);
            color: white;
            padding: 15px 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffeb3b;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            transition: transform 0.3s;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .burger-menu {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav ul li a {
            color: white;
            font-weight: 600;
            padding: 8px 15px;
            border-radius: 5px;
            transition: background 0.3s, color 0.3s;
        }
        nav ul li a:hover {
            background: #ff9900;
            color: #1a237e;
        }
        .breadcrumb {
            padding: 10px 0;
            background: #e3f2fd;
            margin-top: 10px;
            border-radius: 5px;
        }
        .breadcrumb a {
            color: #4a148c;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
            padding: 30px 0;
        }
        .content-area {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
        }
        .sidebar {
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 4px solid #ff9900;
            padding-bottom: 10px;
        }
        h2 {
            font-size: 2rem;
            color: #4a148c;
            margin: 25px 0 15px;
            padding-left: 10px;
            border-left: 5px solid #0066cc;
        }
        h3 {
            font-size: 1.6rem;
            color: #0066cc;
            margin: 20px 0 10px;
        }
        h4 {
            font-size: 1.3rem;
            color: #ff9900;
            margin: 15px 0 8px;
        }
        p {
            margin-bottom: 18px;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background: #fff9c4;
            padding: 15px;
            border-left: 5px solid #ff9800;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .featured-img {
            margin: 25px auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: transform 0.4s;
        }
        .featured-img:hover {
            transform: translateY(-5px);
        }
        .link-list {
            background: #f1f8ff;
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
        }
        .link-list li {
            margin-bottom: 10px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #4a148c;
        }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%;
            padding: 12px;
            border: 2px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
            border-color: #0066cc;
            outline: none;
        }
        button {
            background: linear-gradient(to right, #0066cc, #4a148c);
            color: white;
            border: none;
            padding: 14px 24px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            width: 100%;
        }
        button:hover {
            background: linear-gradient(to right, #ff9900, #ff5722);
            transform: scale(1.03);
        }
        footer {
            background: #1a237e;
            color: white;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 30px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: #ffeb3b;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        friend-link {
            display: block;
            margin: 10px 0;
            color: #80d8ff;
            font-style: italic;
        }
        friend-link:hover {
            color: #ff9800;
        }
        .copyright {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #b3e5fc;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            nav ul {
                gap: 15px;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: flex-start;
            }
            .burger-menu {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #4a148c;
                padding: 15px;
                border-radius: 10px;
                margin-top: 15px;
            }
            nav ul.show {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .content-area, .sidebar {
                padding: 20px;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .content-area, .sidebar {
            animation: fadeIn 0.8s ease-out;
        }