* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2a4365;
            --primary-light: #3182ce;
            --accent: #d69e2e;
            --accent-hover: #b7791f;
            --text: #2d3748;
            --text-light: #718096;
            --bg: #f7fafc;
            --bg-alt: #edf2f7;
            --border: #e2e8f0;
            --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s ease;
        }
        body {
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, #1a365d 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
        }
        .my-logo span:first-child {
            color: var(--accent);
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-primary {
            display: flex;
            gap: 2rem;
        }
        .nav-primary a {
            color: #e2e8f0;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-primary a:hover,
        .nav-primary a.active {
            color: white;
        }
        .nav-primary a:hover::after,
        .nav-primary a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--accent);
            border-radius: 2px;
        }
        .breadcrumb {
            background-color: var(--bg-alt);
            padding: 0.8rem 1.5rem;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border);
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        .breadcrumb a {
            color: var(--primary-light);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .search-container {
            max-width: 800px;
            margin: 2.5rem auto;
            padding: 0 1.5rem;
        }
        .search-form {
            display: flex;
            box-shadow: var(--card-shadow);
            border-radius: 50px;
            overflow: hidden;
            transition: var(--transition);
        }
        .search-form:focus-within {
            box-shadow: 0 10px 25px -5px rgba(49, 130, 206, 0.3);
        }
        .search-input {
            flex-grow: 1;
            padding: 1.2rem 1.8rem;
            border: none;
            font-size: 1.1rem;
            background-color: white;
            color: var(--text);
        }
        .search-input:focus {
            outline: none;
        }
        .search-button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 0 2.5rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: var(--accent-hover);
        }
        .main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem 3rem;
            flex-grow: 1;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        article {
            background-color: white;
            border-radius: 12px;
            padding: 3rem;
            box-shadow: var(--card-shadow);
            margin-bottom: 2rem;
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 1rem;
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 3rem 0 1.5rem;
            padding-top: 1rem;
            border-top: 1px solid var(--border);
        }
        h3 {
            color: var(--primary-light);
            font-size: 1.6rem;
            margin: 2.5rem 0 1rem;
        }
        h4 {
            color: var(--text);
            font-size: 1.3rem;
            margin: 2rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .article-intro {
            font-size: 1.2rem;
            color: var(--text-light);
            background-color: var(--bg-alt);
            padding: 1.5rem;
            border-left: 4px solid var(--accent);
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid var(--accent);
            margin: 2rem 0;
        }
        .content-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
            margin: 2.5rem auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .content-image:hover {
            transform: scale(1.01);
        }
        .internal-link {
            color: var(--primary-light);
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px dotted currentColor;
            transition: var(--transition);
        }
        .internal-link:hover {
            color: var(--accent-hover);
            border-bottom-style: solid;
        }
        .item-category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .item-card {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: 0 4px 8px rgba(0,0,0,0.08);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .item-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 20px rgba(0,0,0,0.12);
            border-color: var(--accent);
        }
        .last-updated {
            font-style: italic;
            color: var(--text-light);
            font-size: 0.95rem;
            text-align: right;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid var(--border);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: var(--card-shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            font-size: 1.4rem;
            color: var(--primary);
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--accent);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed var(--border);
        }
        .related-links a {
            color: var(--text);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--primary-light);
            padding-left: 5px;
        }
        .interactive-section {
            margin-top: 4rem;
            padding-top: 3rem;
            border-top: 2px solid var(--border);
        }
        .rating-form, .comment-form {
            background-color: var(--bg-alt);
            padding: 2rem;
            border-radius: 12px;
            margin-bottom: 2.5rem;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2.2rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: #f6ad55;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 1rem;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
        }
        .submit-button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            font-size: 1.1rem;
            font-weight: 700;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-button:hover {
            background-color: var(--primary-light);
        }
        .site-footer {
            background-color: var(--primary);
            color: #cbd5e0;
            padding: 3rem 0 2rem;
            margin-top: auto;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-section h4 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent);
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #a0aec0;
            text-decoration: none;
            transition: var(--transition);
        }
        friend-link a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
            grid-column: 1 / -1;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            h1 {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 768px) {
            .nav-primary {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--primary);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1.5rem;
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.2);
            }
            .nav-primary.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                padding: 0 1rem;
            }
            article {
                padding: 2rem 1.5rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 12px;
            }
            .search-input, .search-button {
                border-radius: 0;
                padding: 1rem;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.8rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .item-category-grid {
                grid-template-columns: 1fr;
            }
        }