* {
            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-color: #f8f9fa;
            max-width: 100%;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .italic { font-style: italic; }
        .highlight {
            background-color: #fffacd;
            padding: 0 4px;
            border-radius: 3px;
        }
        .site-header {
            background: linear-gradient(135deg, #2c3e50 0%, #4a6491 100%);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #f1c40f;
            letter-spacing: 1px;
        }
        .my-logo span {
            color: #3498db;
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            padding: 8px 0;
            position: relative;
            font-weight: 500;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #f1c40f;
            transition: width 0.3s;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .nav-desktop a:hover {
            color: #f1c40f;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: 0.3s;
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
        }
        .nav-mobile {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: #2c3e50;
            flex-direction: column;
            padding: 20px;
            display: none;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            z-index: 999;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 12px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-weight: 500;
        }
        .nav-mobile a:hover {
            color: #f1c40f;
            padding-left: 10px;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 10px;
            color: #6c757d;
        }
        .breadcrumb a:hover {
            color: #3498db;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background-color: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
        }
        h2 {
            font-size: 2rem;
            color: #3498db;
            margin-top: 40px;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #ecf0f1;
        }
        h3 {
            font-size: 1.6rem;
            color: #2c3e50;
            margin-top: 30px;
            margin-bottom: 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #7f8c8d;
            margin-top: 25px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: #2c3e50;
            background-color: #f0f8ff;
            padding: 25px;
            border-left: 5px solid #3498db;
            border-radius: 0 8px 8px 0;
            margin-bottom: 30px;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 1px solid #ecf0f1;
            color: #7f8c8d;
            font-size: 0.95rem;
        }
        .update-time {
            background-color: #e8f4fc;
            padding: 5px 10px;
            border-radius: 4px;
            font-weight: 600;
        }
        .featured-img {
            width: 100%;
            border-radius: 10px;
            margin: 30px 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 1px solid #ddd;
        }
        .content-block {
            margin: 35px 0;
        }
        .quote {
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            padding: 25px;
            border-left: 6px solid #f1c40f;
            margin: 30px 0;
            font-size: 1.2rem;
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        .key-points {
            background-color: #f9f9f9;
            padding: 25px;
            border-radius: 10px;
            border: 1px dashed #3498db;
            margin: 30px 0;
        }
        .key-points ul {
            list-style-type: disc;
            padding-left: 20px;
            color: #2c3e50;
        }
        .key-points li {
            margin-bottom: 10px;
        }
        .inline-link {
            color: #2980b9;
            font-weight: 600;
            border-bottom: 1px dotted #2980b9;
        }
        .inline-link:hover {
            color: #f1c40f;
            border-bottom: 1px solid #f1c40f;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        @media (max-width: 992px) {
            .sidebar {
                order: -1;
            }
        }
        .widget {
            background-color: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: #2c3e50;
            padding-bottom: 15px;
            border-bottom: 1px solid #ecf0f1;
        }
        .search-form {
            display: flex;
            margin-top: 10px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 2px solid #3498db;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .search-form button:hover {
            background-color: #2980b9;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 5px;
            font-size: 1.8rem;
            color: #ddd;
            margin: 10px 0;
            cursor: pointer;
        }
        .star-rating .star {
            transition: color 0.2s, transform 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #f1c40f;
            transform: scale(1.1);
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 8px;
            font-weight: 600;
            color: #2c3e50;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 12px;
            border: 1px solid #bdc3c7;
            border-radius: 6px;
            font-size: 1rem;
            font-family: inherit;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(to right, #3498db, #2c3e50);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 6px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 10px;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #2980b9, #1a252f);
            transform: translateY(-2px);
            box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        }
        .related-links ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .related-links a {
            display: block;
            padding: 12px 15px;
            background-color: #f8f9fa;
            border-left: 4px solid #3498db;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .related-links a:hover {
            background-color: #e3f2fd;
            border-left-color: #f1c40f;
            padding-left: 20px;
        }
        .site-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #f1c40f;
            margin-bottom: 20px;
        }
        .footer-links h4 {
            color: #f1c40f;
            font-size: 1.3rem;
            margin-bottom: 20px;
            border-bottom: 1px solid #4a6491;
            padding-bottom: 10px;
        }
        .footer-links ul li {
            margin-bottom: 12px;
        }
        .footer-links a:hover {
            color: #f1c40f;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 10px 0;
            color: #3498db;
        }
        friend-link:hover {
            color: #f1c40f;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #4a6491;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            article, .widget {
                padding: 25px;
            }
            .main-content {
                gap: 25px;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            .footer-container {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }