:root {
            --primary-color: #1a365d;
            --secondary-color: #c53030;
            --accent-color: #f6ad55;
            --light-color: #f7fafc;
            --dark-color: #2d3748;
            --text-color: #4a5568;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --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(--text-color);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary-color);
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .header {
            background: linear-gradient(135deg, var(--primary-color), #2c5282);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent-color);
        }
        .logo-text {
            background: linear-gradient(to right, var(--accent-color), #fed7d7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .search-box {
            display: flex;
            flex: 0 1 400px;
        }
        .search-box input {
            flex-grow: 1;
            padding: 10px 15px;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #9b2c2c;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .nav-menu {
            display: flex;
            margin-top: 1rem;
            background-color: rgba(255, 255, 255, 0.08);
            border-radius: var(--border-radius);
            padding: 0.5rem;
        }
        .nav-menu li {
            margin: 0;
        }
        .nav-menu a {
            color: white;
            padding: 0.7rem 1.2rem;
            display: block;
            border-radius: var(--border-radius);
            font-weight: 500;
        }
        .nav-menu a:hover, .nav-menu a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent-color);
        }
        .breadcrumb {
            padding: 1rem 0 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #cbd5e0;
        }
        .breadcrumb a:hover {
            color: white;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
            padding: 30px 0;
        }
        article {
            background-color: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark-color);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px dashed #e2e8f0;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--secondary-color);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--dark-color);
            font-weight: 500;
            background-color: #f0fff4;
            padding: 1.5rem;
            border-left: 4px solid var(--secondary-color);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffaf0;
            padding: 2rem;
            border-radius: var(--border-radius);
            border: 1px solid #fed7d7;
            margin: 2rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 2rem 0;
        }
        .stat-card {
            background: linear-gradient(135deg, #f7fafc, #edf2f7);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            border-top: 4px solid var(--primary-color);
        }
        .stat-card .number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--secondary-color);
            line-height: 1;
        }
        .featured-image {
            margin: 2.5rem 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            padding: 10px;
            background-color: #f7fafc;
        }
        .link-box {
            background-color: #ebf8ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            border-left: 4px solid #4299e1;
        }
        .link-box h4 {
            margin-top: 0;
            color: #2b6cb0;
        }
        .btn {
            display: inline-block;
            background-color: var(--secondary-color);
            color: white;
            padding: 12px 25px;
            border-radius: var(--border-radius);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background-color: #9b2c2c;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .sidebar-widget {
            background-color: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            color: var(--primary-color);
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #f6ad55;
            margin: 15px 0;
        }
        .stars i {
            cursor: pointer;
            margin: 0 2px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 1px solid #e2e8f0;
            border-radius: var(--border-radius);
            font-family: inherit;
            resize: vertical;
            min-height: 120px;
            margin-bottom: 15px;
        }
        .update-time {
            font-size: 0.9rem;
            color: #718096;
            background-color: #f7fafc;
            padding: 15px;
            border-radius: var(--border-radius);
            text-align: center;
        }
        .footer {
            background-color: var(--dark-color);
            color: #cbd5e0;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            margin-bottom: 15px;
        }
        friend-link {
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid #4a5568;
        }
        friend-link a {
            color: #cbd5e0;
        }
        friend-link a:hover {
            color: var(--accent-color);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-box {
                order: 3;
                flex: 1 1 100%;
                margin-top: 15px;
            }
            .hamburger {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 15px;
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-menu li {
                width: 100%;
            }
            .breadcrumb {
                display: none;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            article, .sidebar-widget {
                padding: 20px;
            }
            h1 {
                font-size: 1.8rem;
            }
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .emoji { font-size: 1.2em; }
        .bold { font-weight: 800; color: var(--primary-color); }
        .separator { height: 1px; background: linear-gradient(to right, transparent, #e2e8f0, transparent); margin: 2.5rem 0; }