* {
            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: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: #0066cc;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #004499;
            text-decoration: underline;
        }
        ul {
            list-style: none;
        }
        .header {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 700;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #4fc3f7;
        }
        .nav-links {
            display: flex;
            gap: 2rem;
        }
        .nav-links a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-links a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 0.75rem 20px;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #5c6bc0;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: 0.3s;
        }
        #nav-toggle {
            display: none;
        }
        .main-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .article-content {
            background-color: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            background-color: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1rem;
            line-height: 1.2;
            border-bottom: 3px solid #4fc3f7;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-left: 10px;
            border-left: 5px solid #4fc3f7;
        }
        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: 1.2rem;
            text-align: justify;
            font-size: 1.05rem;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: #555;
            background-color: #e3f2fd;
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 2rem;
        }
        strong {
            color: #1a237e;
            font-weight: 700;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .content-list {
            margin-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        .content-list li {
            list-style-type: disc;
            margin-bottom: 0.5rem;
            padding-left: 0.5rem;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 1.5rem auto;
            display: block;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }
        .article-image:hover {
            transform: scale(1.01);
        }
        .feature-box {
            background: linear-gradient(145deg, #e3f2fd, #f3e5f5);
            border-left: 5px solid #7e57c2;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 8px;
        }
        .search-form, .comment-form, .rating-form {
            background-color: #f5f5f5;
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 2rem;
            border: 1px solid #ddd;
        }
        .form-title {
            font-size: 1.3rem;
            color: #333;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #4fc3f7;
            outline: none;
            box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.2);
        }
        button {
            background-color: #3949ab;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: background-color 0.3s ease;
        }
        button:hover {
            background-color: #283593;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin-bottom: 1rem;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: #ffc107;
        }
        .footer {
            background: linear-gradient(135deg, #1a237e, #283593);
            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;
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }
        .footer-links a {
            color: #c5cae9;
            display: block;
            margin-bottom: 0.5rem;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: white;
            text-decoration: none;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            transition: background-color 0.3s ease;
        }
        friend-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            font-size: 0.9rem;
            color: #bbdefb;
        }
        @media (max-width: 1024px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .nav-links {
                flex-direction: column;
                width: 100%;
                background-color: #283593;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem 0;
                display: none;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
            }
            #nav-toggle:checked ~ .nav-links {
                display: flex;
            }
            .hamburger {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .article-content {
                padding: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }