* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #4A90E2; 
            --secondary: #50C878; 
            --accent: #FF6B6B; 
            --dark: #2C3E50;
            --light: #F8F9FA;
            --text: #333333;
            --text-light: #666666;
            --border: #E0E0E0;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: #fff;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 1rem;
            font-weight: 700;
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            margin-top: 1.5rem;
            border-left: 5px solid var(--primary);
            padding-left: 1.5rem;
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            margin-top: 3rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border);
        }
        h3 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            margin-top: 2.5rem;
            color: var(--primary);
        }
        h4 {
            font-size: 1.3rem;
            margin-top: 2rem;
            color: var(--secondary);
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
            hyphens: auto;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, #1a2530 100%);
            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;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            color: var(--secondary);
            transform: translateY(-2px);
            transition: var(--transition);
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(255,255,255,0.15);
            color: var(--secondary);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
            padding: 8px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: var(--transition);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--light);
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-section {
            background: linear-gradient(90deg, var(--light) 0%, #eef2f7 100%);
            padding: 2rem 0;
            margin: 2rem 0;
            border-radius: var(--radius);
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid var(--border);
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 30px;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #357ABD;
            transform: translateY(-2px);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 3rem 0;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--border);
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .article-meta span i {
            margin-right: 5px;
            color: var(--primary);
        }
        .highlight-box {
            background: linear-gradient(135deg, #f8fffe 0%, #e6f7ff 100%);
            border-left: 4px solid var(--secondary);
            padding: 2rem;
            margin: 2.5rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .image-wrapper {
            margin: 2.5rem 0;
            text-align: center;
        }
        .featured-img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .featured-img:hover {
            transform: scale(1.01);
            box-shadow: 0 12px 30px rgba(0,0,0,0.2);
        }
        .img-caption {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 0.8rem;
            font-style: italic;
        }
        .internal-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            border-bottom: 1px dotted var(--primary);
            transition: var(--transition);
        }
        .internal-link:hover {
            color: var(--secondary);
            border-bottom-style: solid;
        }
        .emphasis {
            background: linear-gradient(120deg, rgba(74,144,226,0.1) 0%, rgba(80,200,120,0.1) 100%);
            padding: 2rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            position: relative;
            overflow: hidden;
        }
        .emphasis::before {
            content: "💡";
            position: absolute;
            top: 10px;
            right: 10px;
            font-size: 2rem;
            opacity: 0.2;
        }
        aside {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid var(--border);
        }
        .link-list {
            list-style: none;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed var(--border);
        }
        .link-list li:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        .link-list a {
            color: var(--text);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .link-list a:hover {
            color: var(--primary);
            transform: translateX(5px);
        }
        .link-list i {
            color: var(--secondary);
            width: 20px;
        }
        .interactive-section {
            background: var(--light);
            padding: 2.5rem;
            border-radius: var(--radius);
            margin: 3rem 0;
        }
        .rating-widget {
            text-align: center;
            margin-bottom: 3rem;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1.5rem 0;
        }
        .star {
            font-size: 2.5rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #FFD700;
            transform: scale(1.2);
        }
        .comment-form {
            display: grid;
            gap: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 12px 15px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            justify-self: start;
        }
        .submit-btn:hover {
            background: #357ABD;
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(74, 144, 226, 0.3);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.2);
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            display: block;
            margin-bottom: 0.8rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
            transform: translateX(5px);
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: var(--radius);
            margin-bottom: 1rem;
        }
        friend-link a {
            color: var(--secondary) !important;
            font-weight: 600;
        }
        .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) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            .main-nav {
                flex-direction: column;
                width: 100%;
                display: none;
                gap: 0;
            }
            .main-nav.active {
                display: flex;
                margin-top: 1rem;
            }
            .main-nav a {
                padding: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger {
                display: flex;
                position: absolute;
                top: 1.5rem;
                right: 20px;
            }
            .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);
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                padding: 15px;
            }
            article {
                padding: 1.5rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 0.8rem;
            }
            .interactive-section {
                padding: 1.5rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article, .sidebar-widget, .interactive-section {
            animation: fadeIn 0.8s ease-out;
        }
        @media print {
            .main-nav, .search-section, .sidebar-widget, .interactive-section, footer {
                display: none;
            }
            body {
                color: black;
                background: white;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }