* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            overflow-x: hidden;
        }
        a {
            color: #2a5db0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e74c3c;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .site-header {
            background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            background: linear-gradient(90deg, #ffcc00, #ff9966);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .my-logo a {
            color: inherit;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: #e0e0e0;
            font-weight: 600;
            font-size: 1.1rem;
        }
        .nav-desktop a:hover {
            color: #ffcc00;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #1a237e;
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: #e0e0e0;
            padding: 0.8rem 0;
            border-bottom: 1px solid #283593;
            font-weight: 600;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 1rem auto;
            padding: 0 20px;
            font-size: 0.9rem;
            color: #666;
        }
        .breadcrumb a {
            color: #555;
        }
        .main-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #ffcc00;
            padding-left: 1rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        h3 {
            font-size: 1.6rem;
            color: #3949ab;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #5c6bc0;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #555;
            font-weight: 500;
            margin-bottom: 2rem;
            background: #f0f7ff;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #2a5db0;
        }
        .highlight {
            background-color: #fff8e1;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #ffb300;
            margin: 2rem 0;
        }
        .note {
            background-color: #e8f5e9;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #4caf50;
            margin: 2rem 0;
        }
        blockquote {
            font-style: italic;
            color: #555;
            border-left: 4px solid #9c27b0;
            padding-left: 1.5rem;
            margin: 2rem 0;
        }
        ul, ol {
            margin: 1.5rem 0 1.5rem 2rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        strong {
            color: #1a237e;
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            max-height: 500px;
            object-fit: cover;
        }
        .img-caption {
            font-size: 0.95rem;
            color: #666;
            margin-top: 0.8rem;
            font-style: italic;
        }
        .search-box, .comment-form, .rating-form {
            background: #f5f7ff;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .search-box h3, .comment-form h3, .rating-form h3 {
            margin-top: 0;
        }
        form label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        form input[type="text"],
        form input[type="email"],
        form textarea,
        form select {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1.2rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        form input:focus,
        form textarea:focus,
        form select:focus {
            border-color: #2a5db0;
            outline: none;
            box-shadow: 0 0 0 3px rgba(42, 93, 176, 0.1);
        }
        form button {
            background: linear-gradient(to right, #2a5db0, #3f51b5);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 6px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        form button:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 12px rgba(42, 93, 176, 0.3);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars .star:hover,
        .stars .star.active {
            color: #ffcc00;
        }
        .related-links ul {
            list-style: none;
            margin: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #eee;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .related-links i {
            color: #2a5db0;
        }
        .update-time {
            background: #e8f5e9;
            padding: 1rem;
            border-radius: 8px;
            text-align: center;
            font-weight: 600;
            color: #2e7d32;
            margin-top: 2rem;
        }
        .site-footer {
            background: #1a237e;
            color: #e0e0e0;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h4 {
            color: #ffcc00;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        .footer-links a {
            color: #b0b0b0;
            display: block;
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
            transition: all 0.3s;
        }
        .friend-links {
            background: #0d153a;
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 1rem;
        }
        .friend-links h5 {
            color: #ffcc00;
            margin-bottom: 1rem;
        }
        .friend-links a {
            color: #8c9eff;
            display: inline-block;
            margin-right: 1rem;
            margin-bottom: 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #283593;
            color: #aaa;
            font-size: 0.9rem;
            grid-column: 1 / -1;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }
        .mt-3 {
            margin-top: 3rem;
        }