* {
            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: #f8f9fa;
        }
        .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;
            flex-wrap: wrap;
        }
        .my-logo a {
            font-size: 2rem;
            font-weight: bold;
            color: #ffcc00;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        .my-logo a i {
            margin-right: 10px;
        }
        .my-logo a:hover {
            color: #ffdd44;
        }
        .breadcrumb {
            margin-top: 10px;
            font-size: 0.9rem;
            color: #ccc;
        }
        .breadcrumb a {
            color: #ffcc00;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
            flex-wrap: wrap;
        }
        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: background 0.3s;
        }
        nav ul li a:hover, nav ul li a.active {
            background: rgba(255, 255, 255, 0.2);
        }
        main {
            padding: 2rem 0;
            background: white;
            border-radius: 8px;
            margin: 2rem auto;
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
        }
        article {
            padding: 0 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1rem;
            text-align: center;
            border-bottom: 3px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin-top: 2rem;
            margin-bottom: 1rem;
            padding-left: 10px;
            border-left: 5px solid #ffcc00;
        }
        h3 {
            font-size: 1.6rem;
            color: #3949ab;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #5c6bc0;
            margin-top: 1.2rem;
            margin-bottom: 0.6rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            line-height: 1.8;
        }
        .highlight {
            background: #fff9c4;
            padding: 1rem;
            border-left: 4px solid #ffcc00;
            margin: 1.5rem 0;
            font-weight: bold;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 2rem auto;
            border-radius: 10px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        }
        .interactive {
            background: #e3f2fd;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .interactive h3 {
            grid-column: 1 / -1;
            text-align: center;
            color: #1a237e;
        }
        .interactive form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .interactive input, .interactive textarea, .interactive select {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
        }
        .interactive button {
            padding: 0.8rem;
            background: #1a237e;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .interactive button:hover {
            background: #283593;
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .stars {
            color: #ffcc00;
            font-size: 1.5rem;
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #666;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px dashed #ccc;
        }
        footer {
            background: #1a237e;
            color: white;
            padding: 2rem 0;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .friend-links a {
            color: #ffcc00;
            text-decoration: none;
            transition: color 0.3s;
        }
        .friend-links a:hover {
            color: #ffdd44;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #ccc;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-toggle {
                display: block;
                align-self: flex-end;
                margin-top: -50px;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                width: 100%;
                text-align: center;
            }
            nav ul li a {
                display: block;
                padding: 1rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 0 1rem;
            }
            .interactive {
                grid-template-columns: 1fr;
            }
        }
        a {
            transition: color 0.3s, background 0.3s;
        }
        button:hover, a:hover {
            opacity: 0.9;
        }
        .interactive button:hover {
            transform: scale(1.02);
        }
        img:hover {
            transform: scale(1.01);
            transition: transform 0.3s ease;
        }