:root {
            --primary-dark: #0a2a4a;
            --primary-accent: #1a6dcc;
            --secondary-gold: #d4af37;
            --light-bg: #f8f9fa;
            --dark-text: #222;
            --medium-gray: #6c757d;
            --card-shadow: 0 8px 30px rgba(0, 46, 109, 0.08);
            --transition-smooth: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        * {
            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: 1.7;
            color: var(--dark-text);
            background-color: #fff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--primary-dark);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Trebuchet MS', sans-serif;
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition-smooth);
        }
        .my-logo:hover {
            color: var(--secondary-gold);
            transform: translateY(-2px);
        }
        .my-logo span {
            color: var(--secondary-gold);
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition-smooth);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--secondary-gold);
            transition: width 0.3s ease;
        }
        .main-nav a:hover {
            color: var(--secondary-gold);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 1rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid #eaeaea;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
            font-size: 0.9rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: var(--medium-gray);
        }
        .breadcrumb a {
            color: var(--primary-accent);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-container {
            background: linear-gradient(135deg, #f0f5ff 0%, #e6f0ff 100%);
            padding: 2.5rem 0;
            margin: 2rem 0;
            border-radius: 12px;
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: 2px solid #c2d6ff;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition-smooth);
        }
        .search-input:focus {
            border-color: var(--primary-accent);
            box-shadow: 0 0 0 3px rgba(26, 109, 204, 0.2);
        }
        .search-button {
            background-color: var(--primary-accent);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 1rem 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-smooth);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-button:hover {
            background-color: #1457a3;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(26, 109, 204, 0.3);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0 4rem;
        }
        .article-body {
            grid-column: 1;
        }
        .sidebar {
            grid-column: 2;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-dark);
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 3px solid var(--secondary-gold);
        }
        h3 {
            font-size: 1.6rem;
            color: #2c5282;
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #4a5568;
            margin: 2rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: #2d3748;
            margin-bottom: 2rem;
            line-height: 1.8;
        }
        .highlight {
            background-color: #fff9e6;
            border-left: 4px solid var(--secondary-gold);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .data-point {
            background-color: #f0f7ff;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
            border: 1px solid #d1e3ff;
        }
        .data-point h4 {
            color: var(--primary-accent);
            margin-top: 0;
        }
        blockquote {
            font-style: italic;
            color: #555;
            border-left: 4px solid var(--medium-gray);
            padding-left: 1.5rem;
            margin: 2rem 0;
        }
        .content-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 2rem auto;
            display: block;
            box-shadow: var(--card-shadow);
            transition: var(--transition-smooth);
        }
        .content-image:hover {
            transform: scale(1.01);
            box-shadow: 0 12px 40px rgba(0, 46, 109, 0.15);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--medium-gray);
            margin-top: 0.5rem;
            margin-bottom: 2rem;
        }
        .content-link {
            color: var(--primary-accent);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted transparent;
            transition: var(--transition-smooth);
        }
        .content-link:hover {
            border-bottom: 1px dotted var(--primary-accent);
            color: #1457a3;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .sidebar-widget {
            background-color: var(--light-bg);
            padding: 1.8rem;
            border-radius: 12px;
            margin-bottom: 2rem;
            box-shadow: var(--card-shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: var(--primary-dark);
        }
        .related-links {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 1rem;
        }
        .related-links a {
            color: var(--dark-text);
            text-decoration: none;
            display: block;
            padding: 0.8rem 1rem;
            background-color: white;
            border-radius: 8px;
            border-left: 4px solid transparent;
            transition: var(--transition-smooth);
        }
        .related-links a:hover {
            border-left-color: var(--primary-accent);
            background-color: #e6f0ff;
            transform: translateX(5px);
        }
        .update-time {
            background-color: #e8f5e9;
            color: #2e7d32;
            padding: 1rem;
            border-radius: 8px;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-section {
            margin: 4rem 0;
            padding-top: 3rem;
            border-top: 2px solid #eaeaea;
        }
        .rating-form, .comment-form {
            background-color: var(--light-bg);
            padding: 2rem;
            border-radius: 12px;
            margin-bottom: 2rem;
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: var(--secondary-gold);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 0.9rem 1rem;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition-smooth);
        }
        .form-control:focus {
            border-color: var(--primary-accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 109, 204, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
            font-family: inherit;
        }
        .submit-button {
            background-color: var(--primary-accent);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 50px;
            cursor: pointer;
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .submit-button:hover {
            background-color: #1457a3;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(26, 109, 204, 0.3);
        }
        .site-footer {
            background-color: var(--primary-dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary-gold);
        }
        .footer-links {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: var(--secondary-gold);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        friend-link a {
            color: var(--secondary-gold);
            font-weight: 600;
            text-decoration: none;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar {
                grid-column: 1;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--primary-dark);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem 2rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav.active {
                display: flex;
            }
            .search-form {
                flex-direction: column;
            }
            .search-button {
                justify-content: center;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .container {
                padding: 0 15px;
            }
        }
        .text-center { text-align: center; }
        .text-bold { font-weight: 700; }
        .text-gold { color: var(--secondary-gold); }
        .text-accent { color: var(--primary-accent); }
        .mb-3 { margin-bottom: 3rem; }
        .mt-3 { margin-top: 3rem; }
        .py-3 { padding-top: 3rem; padding-bottom: 3rem; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .divider {
            height: 1px;
            background: linear-gradient(to right, transparent, #ccc, transparent);
            margin: 2.5rem 0;
        }