* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #1a5276;
            --secondary: #e74c3c;
            --accent: #f39c12;
            --light: #f8f9fa;
            --dark: #2c3e50;
            --gray: #7f8c8d;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary), #21618c);
            color: white;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: linear-gradient(to right, var(--secondary), #c0392b);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            color: white;
        }
        .section-title {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent);
            position: relative;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 100px;
            height: 3px;
            background: var(--primary);
        }
        .site-header {
            background-color: 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;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        .nav-desktop a {
            font-weight: 600;
            color: var(--dark);
            position: relative;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: var(--transition);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: var(--primary);
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: white;
            padding: 20px;
            box-shadow: inset 0 5px 10px rgba(0,0,0,0.05);
            border-top: 1px solid #eee;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 12px 0;
            border-bottom: 1px solid #eee;
            color: var(--dark);
            font-weight: 600;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 15px 0;
            background: #e8f4fc;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li {
            margin-right: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 10px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-content {
            display: flex;
            gap: 40px;
            padding: 40px 0;
            flex: 1;
        }
        .content-area {
            flex: 3;
        }
        .sidebar {
            flex: 1;
            min-width: 300px;
        }
        .article-header {
            margin-bottom: 30px;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 20px;
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .article-meta i {
            margin-right: 5px;
        }
        .featured-image {
            margin: 30px 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 40px;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .article-content h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin: 2.5rem 0 1.5rem;
            padding-left: 15px;
            border-left: 5px solid var(--accent);
        }
        .article-content h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        .article-content ul, .article-content ol {
            margin-left: 25px;
            margin-bottom: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.8rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e8f4fc, #d6eaf8);
            border-left: 5px solid var(--primary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
        }
        .highlight-box p {
            margin-bottom: 0;
            font-weight: 600;
            color: var(--dark);
        }
        .internal-link {
            background: #fff9e6;
            padding: 5px 10px;
            border-radius: 5px;
            border: 1px dashed var(--accent);
            font-weight: 600;
        }
        .search-widget {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--secondary);
        }
        .comment-rating-section {
            background: white;
            padding: 40px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 40px;
        }
        .rating-box, .comment-box {
            margin-bottom: 40px;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars i:hover,
        .stars i.active {
            color: var(--accent);
        }
        .form-group {
            margin-bottom: 25px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            outline: none;
        }
        .form-row {
            display: flex;
            gap: 20px;
        }
        .form-row .form-group {
            flex: 1;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        .link-list {
            list-style: none;
        }
        .link-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed #eee;
        }
        .link-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--dark);
        }
        .link-list a:hover {
            color: var(--secondary);
        }
        .link-list i {
            color: var(--primary);
        }
        site-footer {
            background: var(--dark);
            color: #ddd;
            padding: 50px 0 20px;
            margin-top: auto;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background: var(--accent);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bbb;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .friend-links {
            background: rgba(255,255,255,0.05);
            padding: 25px;
            border-radius: 8px;
            margin-top: 20px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            .main-content {
                flex-direction: column;
            }
            .sidebar {
                min-width: 100%;
            }
            .article-header h1 {
                font-size: 2.3rem;
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-content {
                padding: 25px;
            }
            .form-row {
                flex-direction: column;
                gap: 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }