* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-color: #1a365d;
            --secondary-color: #e53e3e;
            --accent-color: #38a169;
            --light-color: #f7fafc;
            --dark-color: #2d3748;
            --gray-color: #a0aec0;
            --max-width: 1200px;
        }
        body {
            background-color: #f0f4f8;
            color: var(--dark-color);
            line-height: 1.6;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary-color);
            color: white;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary-color);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav ul li a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 12px;
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        nav ul li a:hover {
            background-color: rgba(255,255,255,0.15);
            color: #fff;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e2e8f0;
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb .container {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary-color);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--gray-color);
        }
        main {
            padding: 40px 0;
            background-color: white;
        }
        .article-header {
            margin-bottom: 40px;
            text-align: center;
            border-bottom: 2px solid var(--accent-color);
            padding-bottom: 25px;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 15px;
            line-height: 1.3;
        }
        .meta-info {
            display: flex;
            justify-content: center;
            gap: 20px;
            color: var(--gray-color);
            font-size: 0.95rem;
        }
        .content-section {
            margin-bottom: 40px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px dashed var(--gray-color);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary-color);
            margin: 25px 0 15px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fffacd;
            padding: 20px;
            border-left: 5px solid var(--accent-color);
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .image-container {
            text-align: center;
            margin: 30px 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 3px solid var(--primary-color);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
        .feature-card {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 6px 12px rgba(0,0,0,0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 20px rgba(0,0,0,0.15);
        }
        .feature-card i {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 15px;
        }
        .feature-card h4 {
            font-size: 1.4rem;
            margin-bottom: 12px;
            color: var(--primary-color);
        }
        .interactive-section {
            background-color: var(--light-color);
            padding: 30px;
            border-radius: 12px;
            margin: 40px 0;
            border: 1px solid var(--gray-color);
        }
        .search-box, .comment-form, .rating-form {
            margin-bottom: 30px;
        }
        .search-box h3, .comment-form h3, .rating-form h3 {
            margin-bottom: 15px;
        }
        .search-box form {
            display: flex;
            max-width: 600px;
        }
        .search-box input {
            flex: 1;
            padding: 15px;
            border: 2px solid var(--primary-color);
            border-radius: 8px 0 0 8px;
            font-size: 1.1rem;
        }
        .search-box button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background-color 0.3s;
        }
        .search-box button:hover {
            background-color: #2c5282;
        }
        .comment-form textarea, .comment-form input, .rating-form select {
            width: 100%;
            max-width: 600px;
            padding: 15px;
            margin-bottom: 15px;
            border: 1px solid var(--gray-color);
            border-radius: 8px;
            font-size: 1rem;
        }
        .comment-form button, .rating-form button {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background-color 0.3s;
        }
        .comment-form button:hover, .rating-form button:hover {
            background-color: #2f855a;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin-bottom: 15px;
        }
        .stars i {
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .stars i.active, .stars i:hover {
            color: #f6e05e;
        }
        .footer-links {
            background-color: #2d3748;
            padding: 40px 0;
            color: white;
        }
        .footer-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 25px;
        }
        .web-link {
            background-color: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: 8px;
            transition: background-color 0.3s;
        }
        .web-link:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .web-link a {
            color: #90cdf4;
            font-weight: 600;
            display: block;
            margin-bottom: 8px;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            text-align: center;
            padding: 25px 0;
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            .header-container {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0;
                margin-top: 20px;
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                width: 100%;
                text-align: center;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            nav ul li a {
                display: block;
                padding: 15px;
            }
            .hamburger {
                display: block;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .footer-links .container {
                grid-template-columns: 1fr;
            }
            .search-box form {
                flex-direction: column;
            }
            .search-box input {
                border-radius: 8px;
                margin-bottom: 10px;
            }
            .search-box button {
                border-radius: 8px;
                padding: 15px;
            }
        }
        .text-center {
            text-align: center;
        }
        .emoji {
            font-size: 1.3em;
            margin-right: 8px;
        }
        .bold {
            font-weight: 800;
            color: var(--primary-color);
        }
        .note {
            background-color: #ebf8ff;
            padding: 15px;
            border-left: 4px solid #4299e1;
            margin: 20px 0;
            border-radius: 0 5px 5px 0;
        }