* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1a365d;
            --secondary-color: #c53030;
            --accent-color: #f6ad55;
            --text-dark: #2d3748;
            --text-light: #f7fafc;
            --gray-bg: #edf2f7;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text-dark);
            background-color: #f8f9fa;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #2a4365);
            color: var(--text-light);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-radius: 0 0 10px 10px;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .logo-area {
            text-align: center;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.8rem;
            color: var(--accent-color);
            text-transform: uppercase;
            letter-spacing: 3px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            transition: var(--transition);
        }
        .my-logo:hover {
            color: #fff;
            text-decoration: none;
            transform: scale(1.05);
        }
        .site-domain {
            font-size: 0.9rem;
            color: #cbd5e0;
            margin-top: 5px;
        }
        .main-nav {
            width: 100%;
        }
        .nav-desktop {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.5rem;
            list-style: none;
        }
        .nav-desktop a {
            color: var(--text-light);
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-desktop a:hover {
            background-color: rgba(255,255,255,0.1);
            text-decoration: none;
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: var(--gray-bg);
            padding: 0.8rem 1.5rem;
            border-radius: 5px;
            margin-bottom: 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
        }
        .breadcrumb i {
            margin: 0 8px;
            color: #a0aec0;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        article {
            background-color: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary-color);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 0.8rem;
        }
        h2 {
            color: var(--primary-color);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--gray-bg);
        }
        h3 {
            color: var(--secondary-color);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--text-dark);
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: var(--primary-color);
            font-weight: 600;
            background-color: #e6fffa;
            padding: 1.5rem;
            border-left: 5px solid var(--accent-color);
            border-radius: 5px;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffaf0;
            border-left: 4px solid var(--accent-color);
            padding: 1.2rem;
            margin: 1.8rem 0;
            font-weight: 600;
        }
        .data-box {
            background-color: #f0fff4;
            border: 2px solid #68d391;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .data-box h3 {
            color: #2f855a;
            margin-top: 0;
        }
        blockquote {
            font-style: italic;
            border-left: 4px solid var(--secondary-color);
            padding-left: 1.5rem;
            margin: 2rem 0;
            color: #4a5568;
        }
        .article-image {
            margin: 2.5rem auto;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
            max-width: 800px;
        }
        .article-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .article-image img:hover {
            transform: scale(1.03);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            padding: 0.8rem;
            background-color: var(--gray-bg);
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        .related-links {
            background-color: var(--gray-bg);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2.5rem 0;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 0;
        }
        .related-links a {
            display: block;
            padding: 0.8rem;
            background-color: white;
            border-radius: 5px;
            transition: var(--transition);
        }
        .related-links a:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateX(5px);
            text-decoration: none;
        }
        .update-time {
            text-align: right;
            font-size: 0.9rem;
            color: #718096;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #e2e8f0;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary-color);
            margin-top: 0;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--gray-bg);
        }
        .search-box form {
            display: flex;
        }
        .search-box input {
            flex: 1;
            padding: 0.8rem;
            border: 2px solid #cbd5e0;
            border-right: none;
            border-radius: 5px 0 0 5px;
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: var(--secondary-color);
        }
        .rating-widget .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin-bottom: 1rem;
        }
        .rating-widget .star {
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget .star:hover,
        .rating-widget .star.active {
            color: #f6ad55;
        }
        .rating-widget form {
            display: none;
        }
        .rating-widget.rated .stars {
            pointer-events: none;
        }
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 5px;
            font-family: inherit;
        }
        .comment-form button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            width: 100%;
        }
        .comment-form button:hover {
            background-color: var(--primary-color);
        }
        footer {
            background-color: var(--primary-color);
            color: var(--text-light);
            padding: 2.5rem 0;
            border-radius: 10px 10px 0 0;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--accent-color);
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #cbd5e0;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.1);
            padding: 1rem;
            border-radius: 5px;
            margin-bottom: 1rem;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255,255,255,0.2);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
                padding: 0 1rem;
            }
            .logo-area {
                text-align: left;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .hamburger {
                display: block;
            }
            .nav-desktop {
                display: none;
                flex-direction: column;
                background-color: var(--primary-color);
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                z-index: 100;
                padding: 1rem;
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            }
            .nav-desktop.active {
                display: flex;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            article {
                padding: 1.5rem;
            }
            .intro {
                font-size: 1.1rem;
                padding: 1rem;
            }
        }
        @media print {
            header, aside, footer, .breadcrumb, .comment-form, .search-box {
                display: none;
            }
            main {
                grid-template-columns: 1fr;
            }
            article {
                box-shadow: none;
                padding: 0;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }