* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            background-attachment: fixed;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a {
            color: #2c5aa0;
            text-decoration: none;
            transition: color 0.3s ease, border-color 0.3s ease;
        }
        a:hover {
            color: #e74c3c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .site-header {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            padding: 1.5rem 0;
            border-radius: 0 0 12px 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            margin-bottom: 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        @media (min-width: 768px) {
            .header-container {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.8rem;
            font-weight: bold;
            background: linear-gradient(45deg, #ffd700, #ffecb3);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
            letter-spacing: 1px;
            text-decoration: none;
        }
        .my-logo:hover {
            text-decoration: none;
            transform: scale(1.03);
            transition: transform 0.3s ease;
        }
        .nav-primary {
            width: 100%;
        }
        .nav-menu {
            display: flex;
            flex-direction: column;
            list-style: none;
            gap: 1rem;
            text-align: center;
        }
        @media (min-width: 768px) {
            .nav-menu {
                flex-direction: row;
                justify-content: center;
                gap: 2.5rem;
            }
        }
        .nav-menu a {
            color: #e3f2fd;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            display: inline-block;
        }
        .nav-menu a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            text-decoration: none;
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            position: absolute;
            top: 1.5rem;
            right: 20px;
        }
        @media (max-width: 767px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                background: #283593;
                padding: 1rem;
                border-radius: 8px;
                margin-top: 1rem;
            }
            .nav-menu.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
        }
        .breadcrumb a {
            color: #5c6bc0;
        }
        .search-container {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            margin-bottom: 3rem;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            gap: 10px;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #c5cae9;
            border-radius: 50px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-input:focus {
            outline: none;
            border-color: #3949ab;
        }
        .search-button {
            background: linear-gradient(45deg, #3949ab, #5c6bc0);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        .search-button:hover {
            background: linear-gradient(45deg, #303f9f, #3949ab);
            transform: translateY(-2px);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr;
            gap: 3rem;
        }
        @media (min-width: 992px) {
            .main-content {
                grid-template-columns: 3fr 1fr;
            }
        }
        .article-body {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            overflow-wrap: break-word;
        }
        .article-body h1 {
            color: #1a237e;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffd700;
            padding-bottom: 0.5rem;
        }
        .article-body h2 {
            color: #283593;
            font-size: 2.2rem;
            margin: 2.5rem 0 1.2rem;
            padding-top: 0.5rem;
        }
        .article-body h3 {
            color: #3949ab;
            font-size: 1.7rem;
            margin: 2rem 0 1rem;
        }
        .article-body h4 {
            color: #5c6bc0;
            font-size: 1.4rem;
            margin: 1.8rem 0 0.8rem;
        }
        .article-body p {
            margin-bottom: 1.8rem;
            font-size: 1.15rem;
            text-align: justify;
        }
        .article-body strong {
            color: #d32f2f;
            font-weight: 700;
        }
        .article-body em {
            background-color: #fff9c4;
            font-style: italic;
            padding: 0 3px;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
            border-left: 6px solid #7e57c2;
            padding: 1.8rem;
            margin: 2.5rem 0;
            border-radius: 0 10px 10px 0;
            box-shadow: 0 4px 10px rgba(0,0,0,0.06);
        }
        .featured-image {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 900px;
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 1rem;
        }
        .updated-time {
            background-color: #e8f5e9;
            padding: 1rem;
            border-radius: 8px;
            text-align: center;
            margin: 2rem 0 3rem;
            font-weight: bold;
            color: #2e7d32;
            border: 1px dashed #4caf50;
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
            align-self: start;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            color: #1a237e;
            border-bottom: 2px solid #ffca28;
            padding-bottom: 0.7rem;
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
        }
        .rating-widget form, .comment-widget form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .rating-stars {
            display: flex;
            gap: 8px;
            font-size: 1.8rem;
            color: #ffd700;
            cursor: pointer;
        }
        .star:hover, .star.active {
            color: #ffab00;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #555;
        }
        .form-control {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #bdc3c7;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: #3498db;
            outline: none;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        .submit-button {
            background: linear-gradient(45deg, #27ae60, #2ecc71);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-button:hover {
            background: linear-gradient(45deg, #229954, #27ae60);
        }
        .site-footer {
            background: #1a237e;
            color: #e3f2fd;
            padding: 3rem 0 1.5rem;
            border-radius: 12px 12px 0 0;
            margin-top: 4rem;
            text-align: center;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        friend-link {
            display: block;
            background: #283593;
            padding: 1.2rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: #3949ab;
        }
        friend-link a {
            color: #bbdefb;
            font-weight: 600;
        }
        .copyright {
            border-top: 1px solid #3949ab;
            padding-top: 1.5rem;
            font-size: 0.95rem;
            color: #90a4ae;
        }