* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: #0066cc;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff6600;
        }
        ul {
            list-style: none;
        }
        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, #1e3c72, #2a5298);
            color: white;
            padding: 20px 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 2rem;
            font-weight: bold;
            color: white;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #ffcc00;
        }
        nav ul {
            display: flex;
            gap: 25px;
        }
        nav a {
            color: white;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 5px;
        }
        nav a:hover {
            background-color: rgba(255,255,255,0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 10px;
            color: #666;
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            margin-bottom: 30px;
        }
        h1 {
            font-size: 2.8rem;
            color: #1e3c72;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: #2a5298;
            margin: 30px 0 15px;
            border-left: 5px solid #ff6600;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.5rem;
            color: #444;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 20px;
            border-left: 4px solid #ffcc00;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .featured-image {
            margin: 30px auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .featured-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .featured-image img:hover {
            transform: scale(1.03);
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 40px 0;
        }
        .form-box {
            background: #f1f8ff;
            padding: 25px;
            border-radius: 10px;
            border: 1px solid #cce7ff;
        }
        .form-box h3 {
            color: #0066cc;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-box input, .form-box textarea, .form-box select {
            width: 100%;
            padding: 12px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-box input:focus, .form-box textarea:focus, .form-box select:focus {
            border-color: #0066cc;
            outline: none;
        }
        .form-box button {
            background: linear-gradient(to right, #0066cc, #004d99);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .form-box button:hover {
            background: linear-gradient(to right, #004d99, #003366);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .rating-stars i {
            color: #ffcc00;
            cursor: pointer;
            font-size: 1.5rem;
            transition: color 0.3s;
        }
        .rating-stars i:hover {
            color: #ff9900;
        }
        footer {
            background: #1a1a1a;
            color: #ccc;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        .footer-section h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #aaa;
        }
        .footer-links a:hover {
            color: #ff6600;
        }
        friend-link {
            display: block;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #444;
        }
        friend-link h4 {
            color: #ffcc00;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            margin-top: 30px;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            nav ul {
                flex-direction: column;
                gap: 10px;
                margin-top: 20px;
                display: none;
                width: 100%;
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 25px;
                right: 20px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .article-content {
                padding: 25px;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
        }