* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            background-attachment: fixed;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(90deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            padding: 1.5rem 5%;
            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;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            text-decoration: none;
            color: #FFD700;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            font-family: 'Arial Black', sans-serif;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: #ffffff;
            transform: scale(1.05);
            transition: all 0.3s ease;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255, 215, 0, 0.9);
            color: #1e3c72;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 5%;
            background-color: #e9f0fa;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0dff2;
        }
        .breadcrumb a {
            color: #2a5298;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .main-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 5%;
        }
        .article-content { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08); }
        h1 { color: #1e3c72; font-size: 2.8rem; margin-bottom: 1.5rem; border-left: 6px solid #FFD700; padding-left: 1rem; }
        h2 { color: #2a5298; font-size: 2rem; margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid #eaeaea; }
        h3 { color: #3a6bc2; font-size: 1.6rem; margin: 2rem 0 1rem; }
        h4 { color: #555; font-size: 1.3rem; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .lead { font-size: 1.2rem; font-weight: 500; color: #444; background: #f0f7ff; padding: 1.2rem; border-radius: 8px; }
        .highlight { background-color: #fffacd; padding: 0.2rem 0.4rem; border-radius: 3px; font-weight: 600; }
        em { color: #1e3c72; font-style: italic; }
        .content-link {
            color: #d32f2f;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted #d32f2f;
        }
        .content-link:hover {
            color: #1e3c72;
            border-bottom-style: solid;
        }
        .article-img {
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
            max-width: 800px;
        }
        .article-img figcaption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background: #f9f9f9;
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget { margin-bottom: 2.5rem; }
        .sidebar h3 { color: #1e3c72; font-size: 1.4rem; margin-bottom: 1rem; }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .search-form input, .comment-form textarea, .comment-form input, .rating-form select {
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
        }
        .search-form button, .comment-form button, .rating-form button {
            background: linear-gradient(90deg, #1e3c72, #2a5298);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
        }
        .search-form button:hover, .comment-form button:hover, .rating-form button:hover {
            background: linear-gradient(90deg, #2a5298, #3a6bc2);
            transform: translateY(-2px);
        }
        .star-rating { display: flex; justify-content: space-around; font-size: 1.8rem; color: #FFD700; margin: 1rem 0; }
        .site-footer {
            background: #1a1a2e;
            color: #ddd;
            padding: 3rem 5% 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-widget h3 { color: #FFD700; margin-bottom: 1.5rem; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover { color: #FFD700; }
        friend-link {
            display: inline-block;
            background: #2a5298;
            color: white;
            padding: 0.5rem 1rem;
            margin: 0.5rem 0.5rem 0.5rem 0;
            border-radius: 4px;
            text-decoration: none;
        }
        friend-link:hover { background: #3a6bc2; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #333;
            color: #888;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-container { grid-template-columns: 1fr; }
            .sidebar { position: static; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav { display: none; width: 100%; order: 3; margin-top: 1rem; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0.5rem; }
            .main-nav a { display: block; padding: 0.8rem; }
            .header-container { flex-wrap: wrap; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
        }