:root {
            --primary-dark: #1a1a2e;
            --primary-accent: #4cc9f0;
            --secondary-accent: #7209b7;
            --neutral-light: #f8f9fa;
            --neutral-mid: #e9ecef;
            --neutral-dark: #212529;
            --text-primary: #333;
            --text-secondary: #555;
            --success: #2ecc71;
            --warning: #f39c12;
            --spacing-unit: 1rem;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--neutral-light);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--secondary-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-accent);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-unit);
        }
        .site-header {
            background-color: var(--primary-dark);
            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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary-accent), var(--secondary-accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            text-decoration: none;
            color: var(--primary-accent);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--primary-accent);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--neutral-mid);
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 0.5rem;
            color: var(--text-secondary);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--secondary-accent);
        }
        .main-content {
            flex: 1;
            padding: 2rem 0;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        article {
            background-color: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        article h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            color: var(--primary-dark);
            border-bottom: 4px solid var(--primary-accent);
            padding-bottom: 0.5rem;
        }
        article h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            color: var(--secondary-accent);
            padding-left: 0.5rem;
            border-left: 5px solid var(--secondary-accent);
        }
        article h3 {
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
            color: var(--primary-dark);
        }
        article h4 {
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
            color: var(--text-primary);
        }
        article p {
            margin-bottom: 1.5rem;
            color: var(--text-primary);
            text-align: justify;
        }
        article strong {
            color: var(--secondary-accent);
            font-weight: 700;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--neutral-mid);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .update-time {
            background-color: #e7f8ff;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            color: var(--primary-dark);
        }
        .featured-image {
            margin: 2rem 0;
            text-align: center;
        }
        .featured-image img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 0 auto;
            max-height: 500px;
            object-fit: cover;
        }
        .image-caption {
            font-style: italic;
            color: var(--text-secondary);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .pull-quote {
            border-left: 5px solid var(--primary-accent);
            padding: 1.5rem;
            margin: 2rem 0;
            background-color: #f8fdff;
            font-style: italic;
            font-size: 1.2rem;
            color: var(--primary-dark);
        }
        .content-links {
            background-color: #f5f0ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
        }
        .content-links h3 {
            margin-top: 0;
        }
        .content-links ul {
            list-style-position: inside;
            columns: 2;
        }
        .content-links li {
            margin-bottom: 0.5rem;
            break-inside: avoid;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            margin-bottom: 1.2rem;
            color: var(--secondary-accent);
            font-size: 1.4rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--neutral-mid);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem;
            border: 1px solid var(--neutral-mid);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--secondary-accent);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--primary-accent);
        }
        .rating-widget form,
        .comment-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: var(--warning);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: var(--text-primary);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.8rem;
            border: 1px solid var(--neutral-mid);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--secondary-accent);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: var(--primary-accent);
        }
        .site-footer {
            background-color: var(--primary-dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--primary-accent);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section ul li {
            margin-bottom: 0.8rem;
        }
        .footer-section a {
            color: var(--neutral-mid);
        }
        .footer-section a:hover {
            color: var(--primary-accent);
        }
        friend-link {
            display: inline-block;
            background-color: rgba(76, 201, 240, 0.1);
            padding: 0.5rem 1rem;
            margin: 0.3rem;
            border-radius: 20px;
            border: 1px solid var(--primary-accent);
            color: var(--primary-accent);
            font-weight: 600;
        }
        friend-link:hover {
            background-color: var(--primary-accent);
            color: var(--primary-dark);
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--neutral-mid);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                position: fixed;
                top: 70px;
                left: -100%;
                flex-direction: column;
                background-color: var(--primary-dark);
                width: 100%;
                text-align: center;
                padding: 2rem 0;
                transition: 0.3s;
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
                gap: 0;
            }
            .main-nav ul.active {
                left: 0;
            }
            .main-nav ul li {
                margin: 0.8rem 0;
            }
            .hamburger {
                display: block;
            }
            .content-links ul {
                columns: 1;
            }
            article {
                padding: 1.5rem;
            }
            article h1 {
                font-size: 2.2rem;
            }
            article h2 {
                font-size: 1.8rem;
            }
        }