* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-blue: #2a5c8a;
            --secondary-blue: #4a90e2;
            --accent-yellow: #f7b731;
            --accent-red: #eb4d4b;
            --light-bg: #f8f9fa;
            --dark-text: #333;
            --light-text: #666;
            --border-color: #e1e5eb;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #fff;
            color: var(--dark-text);
            line-height: 1.6;
            overflow-x: hidden;
            max-width: 100vw;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-red);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary-blue);
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: var(--secondary-blue);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .section-padding {
            padding: 60px 0;
        }
        .site-header {
            background: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent-yellow);
        }
        .my-logo:hover {
            color: var(--accent-red);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.05rem;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-red);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary-blue);
        }
        .breadcrumb {
            background: var(--light-bg);
            padding: 12px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--light-text);
        }
        .breadcrumb a:hover {
            color: var(--primary-blue);
        }
        .breadcrumb span {
            margin: 0 8px;
            color: #aaa;
        }
        .hero {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 80px 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.2rem;
            color: var(--primary-blue);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.3rem;
            color: var(--light-text);
            max-width: 800px;
            margin: 0 auto 30px;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            margin-bottom: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary-blue);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-yellow);
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            color: var(--primary-blue);
            line-height: 1.2;
        }
        h2 {
            font-size: 2.2rem;
            margin: 2.5rem 0 1.2rem;
            color: var(--primary-blue);
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
        }
        h3 {
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
            color: var(--secondary-blue);
        }
        h4 {
            font-size: 1.4rem;
            margin: 1.5rem 0 0.8rem;
            color: var(--dark-text);
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            color: var(--dark-text);
        }
        strong {
            color: var(--primary-blue);
            font-weight: 700;
        }
        em {
            color: var(--accent-red);
            font-style: italic;
        }
        blockquote {
            border-left: 4px solid var(--accent-yellow);
            padding-left: 25px;
            margin: 2rem 0;
            font-style: italic;
            color: var(--light-text);
            background: #fcf8e3;
            padding: 20px;
            border-radius: 0 8px 8px 0;
        }
        .highlight-box {
            background: #e8f4fc;
            border-left: 5px solid var(--secondary-blue);
            padding: 25px;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .article-image {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 900px;
        }
        .article-image img {
            border-radius: 8px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }
        .article-image figcaption {
            margin-top: 10px;
            font-style: italic;
            color: var(--light-text);
            font-size: 0.95rem;
        }
        .search-form {
            display: flex;
            margin-bottom: 30px;
        }
        .search-form input {
            flex: 1;
            padding: 14px;
            border: 2px solid var(--border-color);
            border-right: none;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--secondary-blue);
        }
        .comment-form, .rating-form {
            background: var(--light-bg);
            padding: 30px;
            border-radius: 8px;
            margin: 3rem 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark-text);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--secondary-blue);
            box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #ddd;
            margin: 10px 0;
        }
        .rating-stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: var(--accent-yellow);
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-widget h4 {
            color: #fff;
            margin-bottom: 25px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bdc3c7;
        }
        .footer-links a:hover {
            color: var(--accent-yellow);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: #34495e;
            padding: 15px;
            margin: 10px 0;
            border-radius: 4px;
            color: #ecf0f1;
            font-weight: 600;
        }
        friend-link a {
            color: #ecf0f1;
        }
        friend-link a:hover {
            color: var(--accent-yellow);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: white;
                box-shadow: var(--shadow);
                padding: 20px;
                transform: translateY(-150%);
                opacity: 0;
                transition: var(--transition);
                z-index: 999;
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 15px;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .article-content {
                padding: 20px;
            }
            .section-padding {
                padding: 40px 0;
            }
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }
        .last-updated {
            background: #fff9e6;
            padding: 15px;
            border-radius: 4px;
            margin: 2rem 0;
            color: #8a6d3b;
            font-size: 0.95rem;
        }
        .last-updated i {
            margin-right: 10px;
            color: var(--accent-yellow);
        }