* {
            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: #f5f5f5;
            padding: 0;
            margin: 0;
        }
        a {
            text-decoration: none;
            color: #0066cc;
            transition: color 0.3s;
        }
        a:hover {
            color: #ff6600;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: #1a1a1a;
            color: #fff;
            padding: 15px 0;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: bold;
            color: #ff6600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo a:hover {
            color: #fff;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 25px;
        }
        nav ul li a {
            color: #ccc;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 4px;
        }
        nav ul li a:hover {
            background-color: #333;
            color: #ff6600;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ff6600;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #1a1a1a;
                padding: 20px;
                z-index: 1000;
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                margin: 10px 0;
            }
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 10px 20px;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #ff6600;
        }
        main {
            background-color: #fff;
            padding: 30px 20px;
            margin-top: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        article {
            max-width: 900px;
            margin: 0 auto;
        }
        h1, h2, h3 {
            color: #1a1a1a;
            margin-bottom: 15px;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid #ff6600;
            padding-bottom: 10px;
        }
        h2 {
            font-size: 2.2rem;
            color: #333;
            margin-top: 30px;
        }
        h3 {
            font-size: 1.8rem;
            color: #555;
            margin-top: 20px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 15px;
            border-left: 5px solid #ffcc00;
            margin: 20px 0;
            font-style: italic;
        }
        .article-image {
            margin: 30px auto;
            text-align: center;
        }
        .article-image img {
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .article-image figcaption {
            font-size: 0.9rem;
            color: #777;
            margin-top: 10px;
        }
        .functional-section {
            background-color: #f9f9f9;
            padding: 25px;
            border-radius: 8px;
            margin: 40px 0;
            border: 1px solid #ddd;
        }
        .functional-section h2 {
            color: #1a1a1a;
            font-size: 1.8rem;
        }
        form {
            display: grid;
            gap: 15px;
            margin-top: 15px;
        }
        input, textarea, select {
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 1rem;
            width: 100%;
        }
        button {
            padding: 12px 25px;
            background-color: #ff6600;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s;
        }
        button:hover {
            background-color: #e55a00;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 1.5rem;
            color: #ffcc00;
        }
        .rating-stars i {
            cursor: pointer;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 15px;
            margin: 40px 0;
        }
        .web-link {
            background-color: #f0f0f0;
            padding: 15px;
            border-radius: 6px;
            text-align: center;
        }
        .web-link a {
            color: #333;
            font-weight: 500;
        }
        .web-link a:hover {
            color: #ff6600;
        }
        footer {
            background-color: #1a1a1a;
            color: #ccc;
            padding: 30px 20px;
            text-align: center;
            margin-top: 40px;
        }
        .copyright {
            margin-top: 20px;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .functional-section {
                padding: 20px;
            }
            .footer-links {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .footer-links {
                grid-template-columns: 1fr;
            }
        }