* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #7c3aed;
            --accent: #f59e0b;
            --text: #1f2937;
            --text-light: #6b7280;
            --bg: #ffffff;
            --bg-alt: #f9fafb;
            --border: #e5e7eb;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.7;
            font-size: 1.125rem;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 60px 0;
        }
        .site-header {
            background-color: var(--bg);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            font-weight: 600;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent);
            transition: var(--transition);
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            position: fixed;
            top: 80px;
            left: 0;
            width: 100%;
            background: var(--bg);
            box-shadow: var(--shadow);
            padding: 20px;
            transform: translateY(-100%);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 999;
        }
        .nav-mobile.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        .nav-mobile a {
            display: block;
            padding: 15px 0;
            border-bottom: 1px solid var(--border);
            font-weight: 600;
        }
        .breadcrumb {
            padding: 20px 0;
            font-size: 0.95rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb i {
            margin: 0 8px;
        }
        .article-header {
            text-align: center;
            margin-bottom: 50px;
            padding-bottom: 30px;
            border-bottom: 2px solid var(--border);
        }
        .article-header h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            line-height: 1.2;
            color: var(--text);
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2.5rem;
            }
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            color: var(--text-light);
            font-size: 1rem;
        }
        .article-meta span i {
            margin-right: 8px;
            color: var(--accent);
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 50px;
        }
        @media (max-width: 992px) {
            .content-area {
                grid-template-columns: 1fr;
            }
        }
        .main-content {
            font-size: 1.125rem;
        }
        .main-content h2 {
            font-size: 2.5rem;
            margin: 60px 0 25px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--primary);
            color: var(--text);
        }
        .main-content h3 {
            font-size: 2rem;
            margin: 50px 0 20px;
            color: var(--primary-dark);
        }
        .main-content h4 {
            font-size: 1.6rem;
            margin: 40px 0 15px;
            color: var(--secondary);
        }
        .main-content p {
            margin-bottom: 25px;
            text-align: justify;
        }
        .main-content strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        .main-content em {
            color: var(--secondary);
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(135deg, var(--bg-alt), #e0e7ff);
            border-left: 5px solid var(--accent);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .figure-wrapper {
            margin: 40px 0;
            text-align: center;
        }
        .figure-wrapper img {
            box-shadow: var(--shadow);
            margin: 0 auto;
        }
        .figcaption {
            margin-top: 15px;
            font-style: italic;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .sidebar {
            background: var(--bg-alt);
            padding: 30px;
            border-radius: var(--radius);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        @media (max-width: 992px) {
            .sidebar {
                position: static;
            }
        }
        .widget {
            margin-bottom: 40px;
        }
        .widget h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--primary);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 15px;
            border: 2px solid var(--border);
            border-right: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin-bottom: 10px;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: var(--accent);
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            font-weight: 600;
            margin-bottom: 8px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 15px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            outline: none;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 18px;
            border-radius: var(--radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 10px;
        }
        .submit-btn:hover {
            opacity: 0.9;
            transform: translateY(-3px);
        }
        .site-footer {
            background: var(--text);
            color: white;
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2.5rem;
            font-weight: 900;
            color: white;
            margin-bottom: 20px;
            display: block;
        }
        .footer-section h3 {
            font-size: 1.5rem;
            margin-bottom: 25px;
            color: var(--accent);
        }
        .footer-links a {
            color: #d1d5db;
            display: block;
            margin-bottom: 12px;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 10px 20px;
            border-radius: 50px;
            margin: 5px;
            color: #d1d5db;
        }
        friend-link a {
            color: #d1d5db;
        }
        friend-link a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #374151;
            color: #9ca3af;
            font-size: 0.95rem;
        }
        .emoji {
            font-size: 1.3em;
            margin-right: 5px;
        }
        .text-center {
            text-align: center;
        }
        .mb-30 {
            margin-bottom: 30px;
        }
        .mt-40 {
            margin-top: 40px;
        }