:root {
            --primary: #2c3e50;
            --secondary: #e74c3c;
            --accent: #3498db;
            --light: #ecf0f1;
            --dark: #1a2530;
            --gray: #7f8c8d;
            --success: #27ae60;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            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: #333;
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--dark);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--accent);
            transform: translateY(-2px);
        }
        .my-logo i {
            color: var(--secondary);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            padding: 8px 12px;
            border-radius: var(--radius);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background: var(--primary);
            color: var(--accent);
        }
        .nav-links a:hover::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 12px;
            width: calc(100% - 24px);
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            background: var(--light);
            padding: 12px 0;
            font-size: 0.9rem;
            color: var(--gray);
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        .search-container {
            background: linear-gradient(135deg, var(--primary), var(--dark));
            padding: 40px 0;
            text-align: center;
            color: white;
            margin-bottom: 30px;
        }
        .search-box {
            max-width: 600px;
            margin: 20px auto 0;
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-box input {
            flex: 1;
            padding: 18px 25px;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #c0392b;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        .content-area {
            background: white;
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        aside {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        h1 {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 20px;
            line-height: 1.3;
            border-left: 5px solid var(--secondary);
            padding-left: 20px;
        }
        h2 {
            color: var(--dark);
            font-size: 1.8rem;
            margin: 35px 0 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        h3 {
            color: var(--primary);
            font-size: 1.4rem;
            margin: 25px 0 10px;
        }
        h4 {
            color: var(--gray);
            font-size: 1.2rem;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            font-size: 1.05rem;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--dark);
            background: #f8f9fa;
            padding: 25px;
            border-radius: var(--radius);
            border-left: 4px solid var(--accent);
            margin-bottom: 30px;
        }
        .highlight {
            background: #fff9e6;
            padding: 20px;
            border-radius: var(--radius);
            border: 1px dashed #f1c40f;
            margin: 25px 0;
        }
        .highlight strong {
            color: #e67e22;
        }
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 25px 0;
        }
        .feature-card {
            background: #f8f9fa;
            padding: 20px;
            border-radius: var(--radius);
            border-top: 4px solid var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .feature-card i {
            color: var(--secondary);
            font-size: 2rem;
            margin-bottom: 15px;
        }
        .article-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--radius);
            margin: 25px 0;
            box-shadow: var(--shadow);
            border: 3px solid white;
        }
        .link-box {
            background: #e8f4fc;
            padding: 20px;
            border-radius: var(--radius);
            margin: 25px 0;
        }
        .link-box a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: inline-block;
            margin: 5px 15px 5px 0;
            transition: var(--transition);
        }
        .link-box a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        .update-time {
            display: inline-block;
            background: var(--light);
            color: var(--gray);
            padding: 8px 15px;
            border-radius: 50px;
            font-size: 0.9rem;
            margin: 20px 0;
        }
        .update-time i {
            margin-right: 8px;
            color: var(--success);
        }
        .rating-section {
            background: #f8f9fa;
            padding: 30px;
            border-radius: var(--radius);
            margin: 40px 0;
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #f1c40f;
            margin: 15px 0;
            cursor: pointer;
        }
        .stars span {
            margin: 0 3px;
            transition: var(--transition);
        }
        .stars span:hover,
        .stars span.active {
            transform: scale(1.3);
        }
        .comment-form,
        .score-form {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-top: 25px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--primary);
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(52,152,219,0.2);
        }
        button[type="submit"] {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 15px 30px;
            font-size: 1.1rem;
            border-radius: var(--radius);
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
        }
        button[type="submit"]:hover {
            background: #c0392b;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(231,76,60,0.3);
        }
        .sidebar-widget {
            margin-bottom: 30px;
            padding-bottom: 25px;
            border-bottom: 1px solid #eee;
        }
        .sidebar-widget:last-child {
            border-bottom: none;
        }
        .widget-title {
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        .popular-links {
            list-style: none;
        }
        .popular-links li {
            margin-bottom: 12px;
        }
        .popular-links a {
            color: var(--dark);
            text-decoration: none;
            display: block;
            padding: 10px 15px;
            background: #f8f9fa;
            border-radius: var(--radius);
            transition: var(--transition);
            border-left: 3px solid transparent;
        }
        .popular-links a:hover {
            background: #e8f4fc;
            border-left-color: var(--accent);
            padding-left: 20px;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: white;
        }
        .footer-about p {
            color: #bbb;
            text-align: left;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-links h4::after,
        .footer-contact h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background: var(--secondary);
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 8px 15px;
            border-radius: var(--radius);
            margin: 5px 10px 5px 0;
            transition: var(--transition);
        }
        friend-link a {
            color: #ddd;
            text-decoration: none;
        }
        friend-link:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                flex-direction: column;
                background: var(--dark);
                padding: 20px;
                transition: 0.5s;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .nav-links.active {
                left: 0;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                padding: 15px;
            }
            .content-area {
                padding: 25px;
            }
            .feature-list {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .search-box {
                flex-direction: column;
                border-radius: var(--radius);
            }
            .search-box input,
            .search-box button {
                width: 100%;
                border-radius: 0;
            }
            .intro {
                padding: 20px;
                font-size: 1.1rem;
            }
        }