:root {
            --primary-dark: #0a1428;
            --primary-blue: #1a73e8;
            --accent-gold: #c8aa6e;
            --neutral-light: #f0f0f0;
            --neutral-mid: #5b5b5b;
            --neutral-dark: #1e2328;
            --success: #0ac18e;
            --warning: #f0b232;
            --error: #e84057;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --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: #333;
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #091428 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Cinzel', serif;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-gold);
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: white;
            text-shadow: 0 0 10px rgba(200, 170, 110, 0.7);
        }
        .my-logo span {
            color: var(--primary-blue);
            font-weight: 300;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: var(--neutral-light);
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--accent-gold);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.75rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: var(--primary-blue);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-container {
            max-width: 1280px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        article {
            background: white;
            border-radius: var(--border-radius);
            padding: 3rem;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent-gold);
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-dark);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--neutral-dark);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--neutral-mid);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            color: var(--neutral-mid);
            font-weight: 500;
            margin-bottom: 2rem;
            padding-left: 1rem;
            border-left: 4px solid var(--primary-blue);
        }
        .highlight-box {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-left: 5px solid var(--accent-gold);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--primary-blue);
            transition: transform 0.3s ease;
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary-blue);
            margin-bottom: 1rem;
        }
        .stat-card h3 {
            font-size: 2rem;
            color: var(--primary-dark);
            margin: 0.5rem 0;
        }
        .article-img {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .article-img:hover {
            transform: scale(1.02);
        }
        figcaption {
            text-align: center;
            font-style: italic;
            color: var(--neutral-mid);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .content-link {
            color: var(--primary-blue);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--primary-blue);
            transition: var(--transition);
        }
        .content-link:hover {
            color: var(--primary-dark);
            border-bottom-style: solid;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .widget {
            background: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            color: var(--primary-dark);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-gold);
        }
        .search-form {
            display: flex;
            margin-top: 1rem;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #0d5bb5;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: #ddd;
            margin: 1rem 0;
            cursor: pointer;
        }
        .stars .star {
            transition: var(--transition);
            margin: 0 2px;
        }
        .stars .star:hover,
        .stars .star.active {
            color: var(--warning);
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            height: 120px;
            padding: 1rem;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            margin-bottom: 1rem;
            resize: vertical;
        }
        .comment-form button {
            width: 100%;
            padding: 0.8rem;
            background: var(--success);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background: #089c70;
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #eee;
        }
        .related-links a {
            color: var(--neutral-dark);
            text-decoration: none;
            transition: var(--transition);
            display: block;
        }
        .related-links a:hover {
            color: var(--primary-blue);
            padding-left: 5px;
        }
        .related-links a::before {
            content: '▶';
            color: var(--accent-gold);
            margin-right: 0.5rem;
            font-size: 0.8rem;
        }
        .site-footer {
            background: var(--primary-dark);
            color: var(--neutral-light);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo {
            font-family: 'Cinzel', serif;
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
            display: block;
        }
        .footer-links h4 {
            color: var(--accent-gold);
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #b0b7c3;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 0.8rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        friend-link a {
            color: var(--accent-gold);
            text-decoration: none;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #8a8f99;
            font-size: 0.9rem;
        }
        .update-time {
            background: #e7f1ff;
            color: var(--primary-blue);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            display: flex;
            align-items: center;
            gap: 1rem;
            font-weight: 500;
        }
        .update-time i {
            font-size: 1.2rem;
        }
        @media (max-width: 1024px) {
            .main-container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 0 1rem;
            }
            .main-nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--primary-dark);
                flex-direction: column;
                padding: 1rem;
                box-shadow: var(--shadow);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .main-container,
            article {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        .key-term {
            background: linear-gradient(120deg, rgba(26, 115, 232, 0.1) 0%, transparent 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
            color: var(--primary-blue);
        }
        .tip {
            background-color: #e8f5e9;
            border-left: 5px solid var(--success);
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .warning-note {
            background-color: #fff8e1;
            border-left: 5px solid var(--warning);
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .quote {
            font-style: italic;
            font-size: 1.1rem;
            color: var(--neutral-mid);
            padding: 1.5rem 2rem;
            margin: 2rem 0;
            background: #f8f9fa;
            border-radius: var(--border-radius);
            position: relative;
        }
        .quote::before {
            content: '\201C';
            font-size: 4rem;
            color: var(--accent-gold);
            position: absolute;
            left: 10px;
            top: -10px;
            font-family: Georgia, serif;
        }
        .cta-button {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary-blue) 0%, #0d5bb5 100%);
            color: white;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            margin: 1rem 0;
            box-shadow: 0 4px 15px rgba(26, 115, 232, 0.3);
            transition: var(--transition);
        }
        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(26, 115, 232, 0.4);
        }