* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            min-height: 100vh;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: #0056b3; transition: color 0.3s ease; }
        a:hover { color: #003d82; }
        ul, ol { padding-left: 2em; margin-bottom: 1.5em; }
        section { margin-bottom: 3rem; }
        header {
            background: linear-gradient(to right, #0c2461, #1e3799);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #ffcc00, #ff9900);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover { transform: scale(1.02); }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        nav a:hover {
            background: rgba(255,255,255,0.15);
            color: #ffcc00;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background: #e9f0f9;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #0c2461; }
        .breadcrumb i { margin: 0 8px; color: #888; }
        main { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 6px 20px rgba(0,0,0,0.08); margin: 2rem auto; }
        h1 {
            font-size: 2.8rem;
            color: #0c2461;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        h2 { font-size: 2rem; color: #1e3799; margin: 2.5rem 0 1.2rem; padding-bottom: 0.5rem; border-bottom: 1px dashed #ccc; }
        h3 { font-size: 1.6rem; color: #2c3e50; margin: 2rem 0 1rem; }
        h4 { font-size: 1.3rem; color: #4a5568; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .lead { font-size: 1.2rem; color: #555; font-weight: 500; background: #f8f9fa; padding: 1.2rem; border-left: 4px solid #ffcc00; border-radius: 0 8px 8px 0; }
        .highlight { background: linear-gradient(120deg, #ffecb3 0%, #ffcc80 100%); padding: 0.3rem 0.6rem; border-radius: 4px; font-weight: 600; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #777;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eee;
        }
        .interactive-box {
            background: #f0f8ff;
            border: 2px solid #1e3799;
            border-radius: 10px;
            padding: 2rem;
            margin: 2.5rem 0;
        }
        .interactive-box h3 { color: #0c2461; margin-top: 0; }
        .search-form, .comment-form, .rating-form {
            display: grid;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        input, textarea, select {
            padding: 0.9rem;
            border: 1px solid #bdc3c7;
            border-radius: 6px;
            font-size: 1rem;
            width: 100%;
        }
        button, .btn {
            background: linear-gradient(to right, #1e3799, #0c2461);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #0c2461, #1e3799);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .stars { display: flex; gap: 0.5rem; margin: 1rem 0; }
        .stars i { color: #ffcc00; font-size: 1.8rem; cursor: pointer; }
        .stars i:hover { transform: scale(1.2); }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            margin: 2rem auto;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            border: 5px solid white;
        }
        .related-links {
            background: #f9f9f9;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .related-links h4 { margin-top: 0; }
        .related-links ul { list-style: none; padding-left: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; }
        .related-links li { padding: 0.8rem; background: white; border-radius: 6px; border-left: 4px solid #1e3799; }
        .related-links a { font-weight: 600; display: block; }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h4 {
            color: #ffcc00;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            background: #34495e;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
        }
        friend-link h5 { color: #ffcc00; margin-bottom: 1rem; }
        friend-link a {
            color: #ecf0f1;
            display: inline-block;
            padding: 0.5rem 1rem;
            background: #1e3799;
            border-radius: 4px;
            margin-right: 0.8rem;
            margin-bottom: 0.8rem;
        }
        friend-link a:hover { background: #0c2461; color: #ffcc00; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .header-content { flex-wrap: wrap; }
            nav ul { gap: 1rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1e3799;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                border-radius: 0 0 12px 12px;
            }
            nav ul.active { display: flex; }
            main { padding: 1.5rem; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            .my-logo { font-size: 1.8rem; }
            .interactive-box { padding: 1.5rem; }
        }