* {
            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;
        }
        a {
            text-decoration: none;
            color: #0066cc;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #004499;
            text-decoration: underline;
        }
        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, #283593);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2rem;
            font-weight: bold;
            color: white;
        }
        .logo span {
            color: #4fc3f7;
        }
        .logo a {
            color: inherit;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-desktop a:hover {
            background-color: rgba(255,255,255,0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #1a237e;
            padding: 1rem;
            margin-top: 1rem;
            border-radius: 8px;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 0.8rem;
            border-bottom: 1px solid #3949ab;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #666;
        }
        .breadcrumb a {
            color: #666;
        }
        .breadcrumb a:hover {
            color: #0066cc;
        }
        .breadcrumb span {
            margin: 0 5px;
        }
        main {
            background: white;
            padding: 2rem 0;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        article {
            padding: 0 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #4fc3f7;
        }
        h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background-color: #e3f2fd;
            padding: 1.5rem;
            border-left: 4px solid #4fc3f7;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .feature-img {
            width: 80%;
            margin: 2rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .feature-img img {
            width: 100%;
            height: auto;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .search-box, .comment-box, .rating-box {
            background: #f5f5f5;
            padding: 2rem;
            border-radius: 10px;
            border: 1px solid #ddd;
        }
        .search-box h3, .comment-box h3, .rating-box h3 {
            color: #1a237e;
            margin-top: 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 1rem;
            width: 100%;
        }
        button {
            background: #1a237e;
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 4px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        button:hover {
            background: #283593;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #ffc107;
            margin-bottom: 1rem;
        }
        .stars i {
            cursor: pointer;
        }
        footer {
            background: #1a237e;
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: #4fc3f7;
        }
        .friend-links {
            list-style: none;
        }
        .friend-links li {
            margin-bottom: 0.8rem;
        }
        .friend-links a {
            color: white;
        }
        .friend-links a:hover {
            color: #4fc3f7;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #b0bec5;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .feature-img {
                width: 100%;
            }
            article {
                padding: 0 1rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
        }
        @media (min-width: 769px) {
            .nav-mobile {
                display: none !important;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article {
            animation: fadeIn 0.8s ease-out;
        }