* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(90deg, #1a237e, #283593, #3949ab);
            color: white;
            padding: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            border-radius: 0 0 12px 12px;
            margin-bottom: 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 1rem;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: #FFD700;
            text-transform: uppercase;
            letter-spacing: 2px;
            font-family: 'Arial Black', sans-serif;
            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);
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #E3F2FD;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.2);
            color: #FFD700;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #EDE7F6;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #5C6BC0;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .main-article {
            background: white;
            padding: 2.5rem;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .article-header { margin-bottom: 2.5rem; }
        .article-header h1 {
            font-size: 2.8rem;
            color: #1A237E;
            margin-bottom: 1rem;
            line-height: 1.2;
            border-left: 6px solid #FF9800;
            padding-left: 1rem;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: #666;
            font-size: 0.95rem;
            margin-top: 1rem;
        }
        .meta-info span { display: flex; align-items: center; gap: 0.5rem; }
        .highlight-box {
            background: linear-gradient(120deg, #E1F5FE, #F3E5F5);
            border-left: 5px solid #4A148C;
            padding: 1.5rem;
            border-radius: 0 10px 10px 0;
            margin: 2rem 0;
        }
        .article-section {
            margin-bottom: 3rem;
        }
        .article-section h2 {
            font-size: 2rem;
            color: #283593;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #C5CAE9;
        }
        .article-section h3 {
            font-size: 1.6rem;
            color: #3949ab;
            margin: 1.8rem 0 1rem;
        }
        .article-section h4 {
            font-size: 1.3rem;
            color: #5C6BC0;
            margin: 1.5rem 0 0.8rem;
        }
        .article-section p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .article-section b, strong {
            color: #1A237E;
            font-weight: 700;
        }
        .article-section em { color: #D81B60; }
        .article-img {
            margin: 2rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .article-img img { transition: transform 0.5s ease; }
        .article-img:hover img { transform: scale(1.03); }
        .caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background: #F5F5F5;
        }
        .internal-link {
            color: #1E88E5;
            font-weight: 600;
            text-decoration: none;
            border-bottom: 2px dotted transparent;
            transition: all 0.3s;
        }
        .internal-link:hover {
            border-bottom-color: #1E88E5;
            color: #0D47A1;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 {
            color: #5D4037;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #EFEBE9;
            font-size: 1.4rem;
        }
        .search-form { display: flex; }
        .search-form input {
            flex: 1;
            padding: 0.9rem;
            border: 2px solid #BBDEFB;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-form button {
            background: #2196F3;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover { background: #0D47A1; }
        .rating-widget .stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .rating-widget .star {
            font-size: 1.8rem;
            color: #E0E0E0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-widget .star:hover,
        .rating-widget .star.active { color: #FFC107; }
        .rating-form,
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-form input,
        .comment-form input,
        .comment-form textarea {
            padding: 0.8rem;
            border: 1px solid #BDBDBD;
            border-radius: 6px;
            font-family: inherit;
        }
        .comment-form textarea { min-height: 120px; resize: vertical; }
        .form-submit {
            background: linear-gradient(90deg, #43A047, #2E7D32);
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s;
        }
        .form-submit:hover { transform: translateY(-2px); }
        .site-footer {
            background: #263238;
            color: #ECEFF1;
            padding: 3rem 2rem;
            border-radius: 12px 12px 0 0;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-links h4 {
            color: #81D4FA;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 0.7rem; }
        .footer-links a {
            color: #B0BEC5;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover { color: #29B6F6; }
        friend-link {
            display: block;
            background: #37474F;
            padding: 1rem;
            border-radius: 8px;
            margin: 0.5rem 0;
        }
        friend-link a {
            color: #80DEEA;
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #455A64;
            color: #90A4AE;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .main-nav {
                width: 100%;
                order: 3;
                margin-top: 1.5rem;
                display: none;
            }
            .main-nav.active { display: block; }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .main-nav a {
                display: block;
                padding: 1rem;
            }
            .hamburger { display: block; }
            .article-header h1 { font-size: 2.2rem; }
            .main-article { padding: 1.5rem; }
        }