:root {
            --primary-dark: #1a1f2e;
            --primary-accent: #c79b3b;
            --secondary-accent: #4a5f7a;
            --text-primary: #e8e6e3;
            --text-secondary: #b0ada7;
            --bg-section: #252a36;
            --bg-card: #2d3343;
            --border-color: #3a4152;
            --success: #4caf50;
            --warning: #ff9800;
            --danger: #f44336;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: var(--primary-dark);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #e6c26e;
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: rgba(26, 31, 46, 0.95);
            border-bottom: 2px solid var(--primary-accent);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(90deg, var(--primary-accent), #e6c26e);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            padding: 5px 0;
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1rem;
            padding: 8px 0;
            position: relative;
        }
        .main-nav a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-accent);
            transition: width 0.3s;
        }
        .main-nav a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: var(--bg-section);
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary-accent);
        }
        .breadcrumb span {
            color: var(--text-secondary);
            margin: 0 8px;
        }
        .breadcrumb .current {
            color: var(--primary-accent);
            font-weight: 600;
        }
        .search-container {
            background-color: var(--bg-card);
            padding: 30px;
            border-radius: 8px;
            margin: 30px 0;
            box-shadow: var(--shadow);
        }
        .search-box {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-box input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid var(--border-color);
            border-radius: 8px 0 0 8px;
            background-color: var(--primary-dark);
            color: var(--text-primary);
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--primary-accent);
            color: var(--primary-dark);
            border: none;
            border-radius: 0 8px 8px 0;
            padding: 0 25px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #e6c26e;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: var(--bg-section);
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .article-content h1 {
            font-size: 2.8rem;
            margin-bottom: 25px;
            color: var(--primary-accent);
            line-height: 1.2;
            border-bottom: 3px solid var(--primary-accent);
            padding-bottom: 15px;
        }
        .article-content h2 {
            font-size: 2rem;
            margin: 40px 0 20px;
            color: var(--text-primary);
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
        }
        .article-content h3 {
            font-size: 1.5rem;
            margin: 30px 0 15px;
            color: var(--primary-accent);
        }
        .article-content h4 {
            font-size: 1.2rem;
            margin: 25px 0 10px;
            color: var(--text-secondary);
        }
        .article-content p {
            margin-bottom: 25px;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-accent);
            font-weight: 700;
        }
        .article-content em {
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content ul, .article-content ol {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        .article-content li {
            margin-bottom: 10px;
        }
        .highlight-box {
            background-color: var(--bg-card);
            border-left: 5px solid var(--primary-accent);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 30px 0;
            border: 3px solid var(--border-color);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: scale(1.01);
            border-color: var(--primary-accent);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-secondary);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .sidebar {
            background-color: var(--bg-section);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 40px;
        }
        .sidebar-widget h3 {
            color: var(--primary-accent);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
            font-size: 1.3rem;
        }
        .quick-links ul {
            list-style: none;
        }
        .quick-links li {
            margin-bottom: 15px;
        }
        .quick-links a {
            display: block;
            padding: 12px 15px;
            background-color: var(--bg-card);
            border-radius: 6px;
            transition: var(--transition);
        }
        .quick-links a:hover {
            background-color: var(--primary-accent);
            color: var(--primary-dark);
            transform: translateX(5px);
        }
        .update-time {
            background-color: var(--bg-card);
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .update-time strong {
            color: var(--primary-accent);
            display: block;
            font-size: 1.2rem;
            margin-bottom: 5px;
        }
        .user-interaction {
            background-color: var(--bg-section);
            border-radius: 12px;
            padding: 40px;
            margin: 40px 0;
            box-shadow: var(--shadow);
        }
        .interaction-title {
            color: var(--primary-accent);
            margin-bottom: 30px;
            text-align: center;
            font-size: 1.8rem;
        }
        .rating-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            margin-bottom: 40px;
        }
        .star-rating {
            direction: rtl;
            font-size: 2rem;
            margin-bottom: 20px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: var(--border-color);
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: var(--warning);
        }
        .user-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 15px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            color: var(--text-primary);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary-accent);
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--primary-accent);
            color: var(--primary-dark);
            border: none;
            border-radius: 6px;
            padding: 18px 30px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 10px;
        }
        .submit-btn:hover {
            background-color: #e6c26e;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(199, 155, 59, 0.3);
        }
        .site-footer {
            background-color: #151821;
            border-top: 2px solid var(--primary-accent);
            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: 1.5rem;
            font-weight: 800;
            color: var(--primary-accent);
            margin-bottom: 20px;
        }
        .footer-links h4 {
            color: var(--text-primary);
            margin-bottom: 25px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: var(--text-secondary);
        }
        .footer-links a:hover {
            color: var(--primary-accent);
            padding-left: 5px;
        }
        .friend-links {
            background-color: var(--bg-card);
            padding: 30px;
            border-radius: 8px;
            margin: 40px 0;
        }
        .friend-links h3 {
            color: var(--primary-accent);
            margin-bottom: 25px;
            text-align: center;
        }
        .friend-links-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
        }
        .friend-link {
            background-color: var(--primary-dark);
            padding: 15px 25px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .friend-link:hover {
            background-color: var(--primary-accent);
            border-color: var(--primary-accent);
        }
        .friend-link:hover a {
            color: var(--primary-dark);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--primary-dark);
                flex-direction: column;
                padding: 20px;
                border-top: 1px solid var(--border-color);
                box-shadow: var(--shadow);
            }
            .main-nav.active ul {
                display: flex;
            }
            .article-content {
                padding: 25px;
            }
            .article-content h1 {
                font-size: 2.2rem;
            }
            .article-content h2 {
                font-size: 1.7rem;
            }
            .search-container, .user-interaction {
                padding: 25px;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-color), transparent);
            margin: 40px 0;
        }
        .tip {
            background-color: rgba(76, 175, 80, 0.1);
            border-left: 5px solid var(--success);
            padding: 20px;
            border-radius: 0 8px 8px 0;
            margin: 25px 0;
        }
        .warning-note {
            background-color: rgba(255, 152, 0, 0.1);
            border-left: 5px solid var(--warning);
            padding: 20px;
            border-radius: 0 8px 8px 0;
            margin: 25px 0;
        }
        .key-term {
            background-color: var(--bg-card);
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
            color: var(--primary-accent);
        }