:root {
            --primary-blue: #1a6bc4;
            --secondary-blue: #2d8dee;
            --accent-gold: #f4b41a;
            --dark-blue: #0a3d62;
            --light-bg: #f0f8ff;
            --text-dark: #333333;
            --text-light: #666666;
            --border-color: #d1e7ff;
            --shadow: 0 4px 12px rgba(10, 61, 98, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--light-bg);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent-gold);
            font-size: 2rem;
        }
        .my-logo:hover {
            color: var(--accent-gold);
            transform: scale(1.05);
            transition: var(--transition);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: rgba(255, 255, 255, 0.1);
            margin-top: 10px;
            border-radius: 8px;
            width: 100%;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0 20px;
        }
        .breadcrumb li {
            margin-right: 10px;
            color: rgba(255, 255, 255, 0.8);
        }
        .breadcrumb a {
            color: white;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
            color: var(--accent-gold);
        }
        .breadcrumb li::after {
            content: '/';
            margin-left: 10px;
        }
        .breadcrumb li:last-child::after {
            content: '';
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .nav-links a:hover,
        .nav-links a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent-gold);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 5px;
        }
        .search-form {
            margin: 30px 0;
            background: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .search-form h3 {
            color: var(--dark-blue);
            margin-bottom: 15px;
            font-size: 1.4rem;
        }
        .search-box {
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex: 1;
            padding: 15px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(26, 107, 196, 0.2);
        }
        .search-btn {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-btn:hover {
            background: var(--dark-blue);
            transform: translateY(-2px);
        }
        main {
            padding: 40px 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding: 30px;
            background: linear-gradient(135deg, #1a6bc4 0%, #0a3d62 100%);
            color: white;
            border-radius: 16px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 20px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.95rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow);
        }
        h2 {
            color: var(--dark-blue);
            margin: 35px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent-gold);
            font-size: 1.8rem;
        }
        h3 {
            color: var(--primary-blue);
            margin: 30px 0 15px;
            font-size: 1.5rem;
        }
        h4 {
            color: var(--text-dark);
            margin: 25px 0 12px;
            font-size: 1.2rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 20px;
            color: var(--text-light);
            font-size: 1.05rem;
        }
        .highlight {
            background-color: rgba(244, 180, 26, 0.15);
            border-left: 4px solid var(--accent-gold);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight p {
            margin-bottom: 0;
            color: var(--text-dark);
            font-weight: 500;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 25px 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .feature-img:hover {
            transform: scale(1.01);
            box-shadow: 0 8px 25px rgba(10, 61, 98, 0.2);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: -15px;
            margin-bottom: 30px;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 25px;
            color: var(--text-light);
        }
        li {
            margin-bottom: 10px;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--dark-blue);
            text-decoration: underline;
        }
        .sidebar {
            background: white;
            padding: 25px;
            border-radius: 16px;
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar-section {
            margin-bottom: 30px;
            padding-bottom: 25px;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-section:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .sidebar-section h3 {
            color: var(--dark-blue);
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-section h3 i {
            color: var(--accent-gold);
        }
        .related-links {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 12px;
            padding: 12px;
            background: var(--light-bg);
            border-radius: 8px;
            transition: var(--transition);
        }
        .related-links li:hover {
            background: rgba(26, 107, 196, 0.1);
            transform: translateX(5px);
        }
        .related-links a {
            color: var(--text-dark);
            font-weight: 500;
            display: block;
        }
        .user-interaction {
            margin: 50px 0;
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: var(--shadow);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        .comment-form, .rating-form {
            background: var(--light-bg);
            padding: 25px;
            border-radius: 12px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            color: var(--dark-blue);
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(26, 107, 196, 0.2);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent-gold);
            transform: scale(1.2);
        }
        .submit-btn {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .submit-btn:hover {
            background: var(--dark-blue);
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(10, 61, 98, 0.3);
        }
        footer {
            background: var(--dark-blue);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            margin-bottom: 25px;
            font-size: 1.3rem;
            border-bottom: 2px solid var(--accent-gold);
            padding-bottom: 10px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 8px;
        }
        friend-link {
            display: block;
            padding: 15px;
            background: rgba(255, 255, 255, 0.1);
            margin: 10px 0;
            border-radius: 8px;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateX(10px);
        }
        friend-link a {
            color: white;
            font-weight: 600;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .hamburger {
                display: block;
                position: absolute;
                right: 20px;
                top: 20px;
            }
            nav {
                width: 100%;
                margin-top: 15px;
                display: none;
            }
            .nav-links {
                flex-direction: column;
                width: 100%;
                gap: 10px;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                padding: 15px;
                background: rgba(255, 255, 255, 0.1);
                border-radius: 8px;
            }
            h1 {
                font-size: 2.2rem;
            }
            .article-content,
            .sidebar {
                padding: 25px 20px;
            }
            .search-box {
                flex-direction: column;
            }
            .search-btn {
                justify-content: center;
                padding: 15px;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-content, .sidebar, .user-interaction {
            animation: fadeIn 0.8s ease-out;
        }
        .text-center { text-align: center; }
        .mb-30 { margin-bottom: 30px; }
        .mt-30 { margin-top: 30px; }
        .emoji { font-size: 1.2em; }
        .strong { font-weight: 700; color: var(--dark-blue); }
        .updated-time { color: var(--accent-gold); font-weight: 600; }