* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #2c3e50;
            --secondary: #e74c3c;
            --accent: #3498db;
            --light: #ecf0f1;
            --dark: #1a1a2e;
            --gray: #7f8c8d;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--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;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            background: linear-gradient(90deg, var(--accent), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            transition: var(--transition);
        }
        .logo a:hover {
            transform: scale(1.05);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        nav a:hover, nav a.active {
            background: var(--secondary);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background: white;
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 1rem 0;
            box-shadow: var(--shadow);
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin-left: 0.5rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--accent);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 3fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2rem 0 1rem;
            padding: 0.5rem 0;
            border-left: 4px solid var(--accent);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin: 1.5rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--gray);
            margin: 1rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(120deg, #a1c4fd 0%, #c2e9fb 100%);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border-left: 5px solid var(--accent);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        strong {
            color: var(--primary);
            font-weight: 700;
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.2);
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            height: fit-content;
        }
        .widget {
            margin-bottom: 2rem;
        }
        .widget h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: var(--secondary);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent);
        }
        button, .btn {
            background: linear-gradient(90deg, var(--accent), var(--secondary));
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
            text-decoration: none;
            text-align: center;
        }
        button:hover, .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(52, 152, 219, 0.3);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.5rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffc107;
        }
        .rating input:checked ~ label {
            color: #ffc107;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .related-link {
            background: var(--light);
            padding: 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .related-link:hover {
            background: var(--accent);
            transform: translateY(-5px);
        }
        .related-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
        }
        .related-link:hover a {
            color: white;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .footer-section h3 {
            color: white;
            margin-bottom: 1.5rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .friend-links a {
            color: var(--light);
            text-decoration: none;
            transition: var(--transition);
        }
        .friend-links a:hover {
            color: var(--accent);
            padding-left: 0.5rem;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: var(--gray);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav ul {
                position: fixed;
                top: 70px;
                left: -100%;
                flex-direction: column;
                background: var(--dark);
                width: 100%;
                padding: 2rem;
                transition: var(--transition);
                box-shadow: var(--shadow);
                z-index: 999;
            }
            nav ul.active {
                left: 0;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .header-container {
                padding: 0 1rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article {
            animation: fadeIn 0.8s ease-out;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        .updated-time {
            color: var(--gray);
            font-size: 0.9rem;
            font-style: italic;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }