* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            color: #2c3e50;
            line-height: 1.7;
            font-size: 1.05rem;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: #2980b9;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1a5276;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: #2c3e50;
            color: white;
            padding: 1.2rem 0;
            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;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            color: #f1c40f;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .logo a {
            color: inherit;
        }
        .logo span {
            color: #3498db;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: #ecf0f1;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        nav a:hover, nav a.active {
            background: #3498db;
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #f1c40f;
        }
        .breadcrumb {
            background: #ecf0f1;
            padding: 1rem 0;
            margin-bottom: 2rem;
            font-size: 0.95rem;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #3498db;
        }
        .breadcrumb span {
            margin: 0 0.5rem;
        }
        .search-box {
            background: #34495e;
            padding: 1.5rem 0;
            margin-bottom: 2.5rem;
        }
        .search-form {
            display: flex;
            max-width: 700px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
        }
        .search-form button {
            background: #f1c40f;
            color: #2c3e50;
            border: none;
            border-radius: 0 50px 50px 0;
            padding: 0 2rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
            font-size: 1.1rem;
        }
        .search-form button:hover {
            background: #f39c12;
        }
        main {
            padding: 2rem 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 3px solid #3498db;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #7f8c8d;
            font-size: 1rem;
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .article-meta i {
            margin-right: 0.5rem;
        }
        .content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .content {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.05);
        }
        .article-body h2 {
            color: #2980b9;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #bdc3c7;
            font-size: 1.8rem;
        }
        .article-body h3 {
            color: #2c3e50;
            margin: 2rem 0 1rem;
            font-size: 1.5rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.08rem;
        }
        .article-body strong {
            color: #e74c3c;
            font-weight: 700;
        }
        .article-body em {
            color: #27ae60;
            font-style: italic;
        }
        .highlight-box {
            background: #e8f4fc;
            border-left: 5px solid #3498db;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .image-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            max-height: 500px;
            object-fit: cover;
            width: 100%;
        }
        .image-caption {
            font-style: italic;
            color: #7f8c8d;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 {
            color: #2c3e50;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f1c40f;
            font-size: 1.4rem;
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-widget .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #bdc3c7;
            cursor: pointer;
            margin-bottom: 1rem;
        }
        .rating-widget .stars .star:hover,
        .rating-widget .stars .star.active {
            color: #f1c40f;
        }
        .rating-widget input, .rating-widget textarea {
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
        }
        .rating-widget button {
            background: #27ae60;
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .rating-widget button:hover {
            background: #219653;
        }
        .comment-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            max-height: 400px;
            overflow-y: auto;
            padding-right: 0.5rem;
        }
        .comment-list::-webkit-scrollbar {
            width: 6px;
        }
        .comment-list::-webkit-scrollbar-thumb {
            background: #bdc3c7;
            border-radius: 10px;
        }
        .comment {
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #eee;
        }
        .comment:last-child {
            border-bottom: none;
        }
        .comment-author {
            font-weight: bold;
            color: #2c3e50;
        }
        .comment-date {
            font-size: 0.85rem;
            color: #95a5a6;
        }
        .comment-text {
            margin-top: 0.5rem;
        }
        .longtail-links {
            background: #ecf0f1;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .longtail-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.04);
            transition: transform 0.3s ease, box-shadow 0.3s;
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(0,0,0,0.08);
        }
        .web-link a {
            color: #2c3e50;
            font-weight: 600;
            display: block;
            font-size: 1.05rem;
        }
        .web-link a:hover {
            color: #3498db;
        }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-col h4 {
            color: #f1c40f;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 0.8rem;
        }
        .footer-col a {
            color: #bdc3c7;
        }
        .footer-col a:hover {
            color: #f1c40f;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            font-size: 0.95rem;
            color: #95a5a6;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 1.5rem;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 0;
            }
            nav ul li {
                width: 100%;
            }
            nav a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid #34495e;
            }
            .hamburger {
                display: block;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .article-body {
                padding: 1.8rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 50px;
                overflow: hidden;
            }
            .search-form input {
                border-radius: 0;
                margin-bottom: 0;
            }
            .search-form button {
                border-radius: 0;
                padding: 1rem;
            }
        }