:root {
            --primary-color: #4a6de5;
            --secondary-color: #1a1f3c;
            --accent-color: #ffd166;
            --text-light: #f8f9fa;
            --text-dark: #212529;
            --bg-light: #ffffff;
            --bg-dark: #0d1117;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 12px;
            --container-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-light);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--secondary-color);
            color: var(--text-light);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-color);
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(90deg, #ffd166, #4a6de5);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            padding: 5px 0;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: var(--text-light);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
            font-size: 1.1rem;
        }
        .main-nav a:hover {
            color: var(--accent-color);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--accent-color);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #f1f3f9;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb-list {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb-list li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: #666;
        }
        .search-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 2.5rem 0;
            text-align: center;
            color: white;
            margin-bottom: 3rem;
            border-radius: var(--border-radius);
        }
        .search-form {
            max-width: 600px;
            margin: 1rem auto 0;
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background-color: var(--accent-color);
            color: var(--secondary-color);
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #ffc145;
        }
        .main-content {
            flex: 1;
            padding: 2rem 0;
        }
        .article-header {
            margin-bottom: 3rem;
        }
        .article-header h1 {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            color: var(--secondary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            gap: 2rem;
            color: #666;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }
        .meta-info span i {
            margin-right: 0.5rem;
        }
        .article-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-content {
                grid-template-columns: 1fr;
            }
        }
        .content-body {
            font-size: 1.1rem;
        }
        .content-body h2 {
            font-size: 2.2rem;
            color: var(--secondary-color);
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--primary-color);
        }
        .content-body h3 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1rem;
        }
        .content-body h4 {
            font-size: 1.5rem;
            color: #555;
            margin: 2rem 0 1rem;
        }
        .content-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .content-body blockquote {
            border-left: 5px solid var(--accent-color);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background-color: #f9f9f9;
            padding: 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border-left: 6px solid var(--primary-color);
        }
        .highlight-box h3 {
            margin-top: 0;
            color: var(--secondary-color);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .sidebar {
            background-color: #f8f9fa;
            padding: 2rem;
            border-radius: var(--border-radius);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            color: var(--secondary-color);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        .link-list {
            list-style: none;
            margin-bottom: 2rem;
        }
        .link-list li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #ddd;
        }
        .link-list a {
            display: flex;
            align-items: center;
            color: var(--text-dark);
        }
        .link-list a:hover {
            color: var(--primary-color);
        }
        .link-list i {
            margin-right: 0.8rem;
            color: var(--primary-color);
        }
        .interactive-section {
            background-color: var(--bg-light);
            border: 2px solid #eaeaea;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .interactive-section h2 {
            margin-top: 0;
            color: var(--secondary-color);
        }
        .rating-form, .comment-form {
            display: grid;
            gap: 1.5rem;
            margin-top: 1.5rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin-bottom: 1rem;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: var(--accent-color);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
        }
        .form-control {
            padding: 0.9rem 1.2rem;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(74, 109, 229, 0.2);
        }
        .submit-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            justify-self: start;
        }
        .submit-btn:hover {
            background-color: #3a5bd0;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(74, 109, 229, 0.25);
        }
        .site-footer {
            background-color: var(--secondary-color);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: var(--accent-color);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 1.5rem;
        }
        friend-link a {
            color: var(--accent-color);
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 500px;
                margin-top: 1rem;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
                padding: 1rem 0;
            }
            .header-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .my-logo {
                margin-bottom: 1rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input, .search-btn {
                border-radius: var(--border-radius);
                width: 100%;
            }
            .search-input {
                margin-bottom: 1rem;
            }
            .content-body h2 {
                font-size: 1.8rem;
            }
            .content-body h3 {
                font-size: 1.5rem;
            }
            .content-body h4 {
                font-size: 1.3rem;
            }
        }