:root {
            --primary-dark: #1a365d;
            --primary-light: #2c5282;
            --accent-gold: #d4af37;
            --accent-wood: #8b4513;
            --light-bg: #f7fafc;
            --dark-text: #2d3748;
            --light-text: #f8f9fa;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--dark-text);
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            background-attachment: fixed;
        }
        .site-header {
            background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-light) 100%);
            color: var(--light-text);
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.5rem;
            font-weight: bold;
            text-decoration: none;
            color: var(--accent-gold);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 2rem;
        }
        .my-logo span {
            background: linear-gradient(to right, #fff, var(--accent-gold));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: var(--light-text);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent-gold);
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #cbd5e0;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--accent-gold);
            text-decoration: underline;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .search-container {
            max-width: 800px;
            margin: 3rem auto 2rem;
            padding: 0 2rem;
        }
        .search-form {
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-input {
            flex-grow: 1;
            padding: 1.2rem 2rem;
            border: none;
            font-size: 1.1rem;
        }
        .search-btn {
            background: var(--accent-wood);
            color: white;
            border: none;
            padding: 0 2.5rem;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: var(--primary-dark);
        }
        .main-content {
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-container {
            background: white;
            border-radius: 12px;
            padding: 3rem;
            box-shadow: var(--shadow);
            border-left: 6px solid var(--accent-gold);
        }
        .sidebar {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            color: var(--primary-dark);
            border-bottom: 3px solid var(--accent-gold);
            padding-bottom: 0.8rem;
            margin-bottom: 1.5rem;
        }
        .sidebar-links a {
            display: block;
            padding: 0.8rem 1rem;
            margin-bottom: 0.5rem;
            background: var(--light-bg);
            border-radius: 6px;
            text-decoration: none;
            color: var(--primary-light);
            transition: var(--transition);
        }
        .sidebar-links a:hover {
            background: var(--primary-light);
            color: white;
            transform: translateX(5px);
        }
        .update-time {
            background: #e6f7ff;
            padding: 1rem;
            border-radius: 8px;
            text-align: center;
            margin-top: 2rem;
            border-left: 4px solid #1890ff;
        }
        h1 {
            font-size: 3.2rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
            padding-bottom: 1.5rem;
            border-bottom: 3px double var(--accent-gold);
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary-light);
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--accent-wood);
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--primary-dark);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.8rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary-light);
            font-weight: 600;
            background: linear-gradient(to right, #f0f4f8, #e6fffa);
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid var(--accent-gold);
        }
        .highlight {
            background: linear-gradient(120deg, #fffbeb 0%, #fef3c7 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
            color: var(--primary-dark);
        }
        em {
            color: var(--accent-wood);
            font-style: italic;
        }
        strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        blockquote {
            border-left: 5px solid var(--accent-gold);
            padding: 1.5rem 2rem;
            margin: 2rem 0;
            background: #f8f9fa;
            font-style: italic;
            border-radius: 0 10px 10px 0;
        }
        .article-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 12px;
            margin: 2.5rem 0;
            box-shadow: var(--shadow);
            border: 5px solid white;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            margin-top: -1.5rem;
            margin-bottom: 2.5rem;
        }
        .strategy-box {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2.5rem;
            border-radius: 12px;
            margin: 3rem 0;
            transform: translateY(0);
            transition: var(--transition);
        }
        .strategy-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.2);
        }
        .interactive-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
        }
        .interactive-link {
            background: white;
            padding: 1.8rem;
            border-radius: 10px;
            text-decoration: none;
            color: var(--dark-text);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border-top: 4px solid transparent;
        }
        .interactive-link:hover {
            border-top-color: var(--accent-gold);
            transform: translateY(-8px);
        }
        .interactive-link h4 {
            color: var(--primary-light);
            margin-bottom: 0.8rem;
        }
        .user-interaction {
            background: white;
            border-radius: 12px;
            padding: 3rem;
            margin: 4rem 0;
            box-shadow: var(--shadow);
        }
        .rating-system {
            display: flex;
            align-items: center;
            gap: 2rem;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
        }
        .star {
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #fbbf24;
        }
        .comment-form,
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        input, textarea, select {
            padding: 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus,
        textarea:focus,
        select:focus {
            outline: none;
            border-color: var(--accent-gold);
            box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
        }
        .submit-btn {
            background: linear-gradient(90deg, var(--primary-dark), var(--primary-light));
            color: white;
            border: none;
            padding: 1.2rem 2.5rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: start;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, var(--primary-light), var(--accent-wood));
            transform: scale(1.03);
        }
        .site-footer {
            background: linear-gradient(90deg, var(--primary-dark) 0%, #0f1a2e 100%);
            color: var(--light-text);
            padding: 4rem 2rem 2rem;
            margin-top: 6rem;
        }
        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-section h3 {
            color: var(--accent-gold);
            margin-bottom: 1.5rem;
            font-size: 1.4rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem 1rem;
            margin-bottom: 0.8rem;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 6px;
            transition: var(--transition);
        }
        friend-link a {
            color: #cbd5e0;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        friend-link:hover {
            background: rgba(212, 175, 55, 0.2);
            transform: translateX(5px);
        }
        friend-link:hover a {
            color: var(--accent-gold);
        }
        .copyright {
            text-align: center;
            padding-top: 3rem;
            margin-top: 3rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar {
                position: static;
            }
            h1 {
                font-size: 2.8rem;
            }
            h2 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .main-nav {
                order: 3;
                width: 100%;
                margin-top: 1rem;
                display: none;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            .main-nav a {
                display: block;
                padding: 1rem;
                text-align: center;
            }
            .hamburger {
                display: block;
            }
            .article-container {
                padding: 2rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .lead {
                font-size: 1.1rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 12px;
            }
            .search-input,
            .search-btn {
                width: 100%;
                border-radius: 0;
            }
        }
        @media (max-width: 480px) {
            html {
                font-size: 14px;
            }
            .site-header,
            .main-content,
            .footer-content {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .interactive-links {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-container,
        .sidebar,
        .user-interaction {
            animation: fadeIn 0.8s ease-out;
        }
        @media print {
            .site-header,
            .search-container,
            .sidebar,
            .user-interaction,
            .site-footer {
                display: none;
            }
            .main-content {
                grid-template-columns: 1fr;
                margin: 0;
                padding: 0;
            }
            body {
                background: white;
                color: black;
            }
        }