* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #2a6ebb;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1d4a7c;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            color: white;
            padding: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 1px;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #4fc3f7;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #4fc3f7;
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100vh;
            background-color: #1e3c72;
            padding: 2rem;
            transition: right 0.4s ease;
            z-index: 1001;
            overflow-y: auto;
            box-shadow: -5px 0 15px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            right: 0;
        }
        .close-menu {
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            position: absolute;
            top: 1rem;
            right: 1.5rem;
            cursor: pointer;
        }
        .nav-mobile a {
            display: block;
            color: white;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-size: 1.1rem;
        }
        .nav-mobile a:hover {
            color: #4fc3f7;
        }
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            z-index: 1000;
        }
        .overlay.active {
            display: block;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #1e3c72;
        }
        .breadcrumb span {
            color: #888;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
        }
        .article-header {
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 2px solid #f0f0f0;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #1e3c72;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: #666;
            font-size: 0.95rem;
        }
        .article-meta span i {
            margin-right: 5px;
            color: #2a6ebb;
        }
        .section {
            margin-bottom: 3rem;
        }
        .section h2 {
            font-size: 2rem;
            color: #2a5298;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e3e9f7;
        }
        .section h3 {
            font-size: 1.6rem;
            color: #355a9c;
            margin: 2rem 0 1rem 0;
        }
        .section h4 {
            font-size: 1.3rem;
            color: #4a6fb5;
            margin: 1.5rem 0 0.8rem 0;
        }
        .section p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #f0f7ff;
            border-left: 4px solid #2a6ebb;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight strong {
            color: #1e3c72;
        }
        .image-container {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .image-container img:hover {
            transform: scale(1.01);
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .link-list {
            list-style: none;
            padding: 1.5rem;
            background: #f8f9fa;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .link-list li::before {
            content: '🔗';
            position: absolute;
            left: 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: 0 6px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: #1e3c72;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
        }
        .search-form input,
        .comment-form input,
        .comment-form textarea,
        .rating-form select {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .search-form input:focus,
        .comment-form input:focus,
        .comment-form textarea:focus,
        .rating-form select:focus {
            outline: none;
            border-color: #2a6ebb;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, #2a6ebb, #1e3c72);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
            text-align: center;
        }
        .btn:hover {
            background: linear-gradient(to right, #1e3c72, #2a6ebb);
            transform: translateY(-2px);
            box-shadow: 0 5px 12px rgba(42, 110, 187, 0.3);
        }
        .btn-block {
            width: 100%;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1.5rem 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .related-links a {
            display: block;
            padding: 0.8rem 0;
            border-bottom: 1px solid #eee;
            color: #555;
        }
        .related-links a:hover {
            color: #2a6ebb;
            padding-left: 5px;
        }
        .comment {
            padding: 1.2rem;
            border-bottom: 1px solid #eee;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.8rem;
            font-size: 0.9rem;
            color: #777;
        }
        .comment-author {
            font-weight: bold;
            color: #1e3c72;
        }
        .site-footer {
            background: #1a1a2e;
            color: #b0b7c3;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-widget h4 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.7rem;
        }
        .footer-widget h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 2px;
            background-color: #4fc3f7;
        }
        .footer-links a {
            display: block;
            color: #b0b7c3;
            padding: 0.5rem 0;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #4fc3f7;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: #252547;
            padding: 1rem;
            border-radius: 6px;
            margin-bottom: 1rem;
            color: #b0b7c3;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #8a94a6;
        }
        .copyright a {
            color: #4fc3f7;
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2.2rem;
            }
            .section h2 {
                font-size: 1.8rem;
            }
            .section h3 {
                font-size: 1.5rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .sidebar-widget {
                padding: 1.5rem;
            }
        }