* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1a237e;
            --secondary-color: #f44336;
            --accent-color: #ff9800;
            --text-dark: #333333;
            --text-light: #666666;
            --bg-light: #f5f5f5;
            --border-color: #e0e0e0;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: #ffffff;
            max-width: 1920px;
            margin: 0 auto;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        h1 {
            font-size: 2.5rem;
            margin-top: 2rem;
        }
        h2 {
            font-size: 2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary-color);
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--text-dark);
            margin-top: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        strong {
            color: var(--secondary-color);
            font-weight: 700;
        }
        em {
            color: var(--accent-color);
            font-style: italic;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-color), #283593);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 5%;
            max-width: 1400px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent-color);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: var(--transition);
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        .breadcrumb {
            background-color: var(--bg-light);
            padding: 1rem 5%;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            padding: 2rem 5%;
            max-width: 1400px;
            margin: 0 auto;
        }
        .content-area {
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        .search-form {
            display: flex;
            margin-bottom: 2rem;
            background: var(--bg-light);
            padding: 1.5rem;
            border-radius: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 0.75rem;
            border: 2px solid var(--border-color);
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background: var(--secondary-color);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #d32f2f;
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: scale(1.01);
        }
        .related-links {
            background: var(--bg-light);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .related-links h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .related-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .related-links a {
            color: var(--text-dark);
            text-decoration: none;
            display: block;
            padding: 0.75rem;
            background: white;
            border-radius: 4px;
            transition: var(--transition);
            border-left: 4px solid var(--accent-color);
        }
        .related-links a:hover {
            background: var(--primary-color);
            color: white;
            transform: translateX(5px);
        }
        .comment-section, .rating-section {
            background: var(--bg-light);
            padding: 2rem;
            border-radius: 8px;
            margin: 3rem 0;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .rating-stars i {
            color: #ffd700;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .comment-form textarea, 
        .comment-form input,
        .rating-form input {
            padding: 0.75rem;
            border: 2px solid var(--border-color);
            border-radius: 4px;
            font-size: 1rem;
            font-family: inherit;
        }
        .comment-form textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background: var(--secondary-color);
            transform: translateY(-2px);
        }
        .update-time {
            background: var(--accent-color);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            display: inline-block;
            margin: 1rem 0;
            font-weight: 600;
        }
        .site-footer {
            background: var(--primary-color);
            color: white;
            padding: 3rem 5% 1rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        .footer-section h3 {
            color: white;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links a {
            color: #e0e0e0;
            text-decoration: none;
            display: block;
            padding: 0.5rem 0;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 10px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 4px;
            margin: 0.5rem 0;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateX(5px);
        }
        friend-link a {
            color: var(--accent-color);
            text-decoration: none;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding: 2rem 0 0;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #bdbdbd;
        }
        @media (max-width: 1024px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 0 1rem;
            }
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--primary-color);
                flex-direction: column;
                padding: 1rem;
                transform: translateY(-100%);
                opacity: 0;
                transition: var(--transition);
                box-shadow: var(--shadow);
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
            }
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(6px, 6px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(6px, -6px);
            }
            .main-container {
                padding: 1rem;
            }
            .content-area {
                padding: 1rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .related-links ul {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: 4px;
                margin-bottom: 0.5rem;
            }
            .search-form button {
                border-radius: 4px;
                padding: 0.75rem;
            }
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid var(--secondary-color);
            margin: 1.5rem 0;
        }
        .tip {
            background: #e8f5e9;
            padding: 1rem;
            border-radius: 6px;
            margin: 1rem 0;
            border-left: 4px solid #4caf50;
        }
        .warning {
            background: #ffebee;
            padding: 1rem;
            border-radius: 6px;
            margin: 1rem 0;
            border-left: 4px solid #f44336;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--accent-color);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }
        .content-area p:first-of-type::first-letter {
            font-size: 3rem;
            font-weight: 700;
            color: var(--secondary-color);
            float: left;
            line-height: 1;
            padding-right: 8px;
        }
        .content-area p {
            line-height: 1.8;
            margin-bottom: 1.8rem;
        }
        .content-area ul, .content-area ol {
            margin-left: 2rem;
            margin-bottom: 1.8rem;
        }
        .content-area li {
            margin-bottom: 0.8rem;
            position: relative;
        }
        .content-area ul li::before {
            content: "•";
            color: var(--accent-color);
            font-weight: bold;
            display: inline-block;
            width: 1em;
            margin-left: -1em;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: 8px;
            overflow: hidden;
        }
        th, td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        th {
            background: var(--primary-color);
            color: white;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background: var(--bg-light);
        }
        tr:hover {
            background: #e3f2fd;
        }