* { 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%, #e4e8f0 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(90deg, #1a2980 0%, #26d0ce 100%);
            color: white;
            padding: 1rem 2rem;
            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;
            max-width: 1400px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            text-decoration: none;
            color: white;
            font-family: 'Arial Black', sans-serif;
            letter-spacing: 1px;
            background: linear-gradient(to right, #ffcc00, #ff9900);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover {
            transform: scale(1.03);
            transition: transform 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 ease;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: #1a2980;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-container {
            background: #fff;
            padding: 2rem;
            margin: 2rem auto;
            max-width: 800px;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #26d0ce;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-input:focus { border-color: #1a2980; }
        .search-btn {
            background: linear-gradient(90deg, #1a2980, #26d0ce);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: bold;
            transition: transform 0.3s;
        }
        .search-btn:hover { transform: scale(1.05); }
        .main-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        .article-content {
            background: white;
            padding: 3rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 16px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 3rem;
            color: #1a2980;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #26d0ce;
            margin: 2.5rem 0 1.2rem;
            padding-left: 0.5rem;
            border-left: 5px solid #1a2980;
        }
        h3 {
            font-size: 1.8rem;
            color: #333;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #555;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        strong { color: #1a2980; }
        em { color: #26d0ce; font-style: italic; }
        .highlight {
            background: linear-gradient(90deg, rgba(255,204,0,0.2), rgba(38,208,206,0.2));
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
            border-left: 5px solid #ffcc00;
        }
        .article-meta {
            color: #666;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .update-time {
            background: #ffcc00;
            color: #333;
            padding: 0.3rem 0.8rem;
            border-radius: 4px;
            font-weight: bold;
        }
        .featured-image {
            width: 100%;
            border-radius: 12px;
            margin: 2.5rem auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            border: 5px solid white;
            transition: transform 0.5s ease;
        }
        .featured-image:hover {
            transform: scale(1.01);
        }
        .interactive-section {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 12px;
            margin: 3rem 0;
            border: 1px solid #eaeaea;
        }
        .interactive-title {
            display: flex;
            align-items: center;
            gap: 1rem;
            color: #1a2980;
            margin-bottom: 1.5rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ffcc00;
        }
        .rating-stars i { cursor: pointer; transition: transform 0.2s; }
        .rating-stars i:hover { transform: scale(1.2); }
        .comment-box, .score-input {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            margin-bottom: 1rem;
            font-family: inherit;
            resize: vertical;
        }
        .comment-box:focus, .score-input:focus {
            border-color: #26d0ce;
            outline: none;
        }
        .submit-btn {
            background: linear-gradient(90deg, #1a2980, #26d0ce);
            color: white;
            border: none;
            padding: 0.9rem 2.5rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: bold;
            font-size: 1rem;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(26,41,128,0.3);
        }
        .content-link {
            color: #1a2980;
            text-decoration: none;
            border-bottom: 2px dotted #26d0ce;
            font-weight: 600;
            transition: all 0.3s;
        }
        .content-link:hover {
            color: #ff9900;
            border-bottom-style: solid;
            background-color: rgba(255,204,0,0.1);
            padding: 2px 4px;
            border-radius: 3px;
        }
        .sidebar h3 {
            color: #1a2980;
            border-bottom: 3px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        .related-links {
            list-style: none;
            margin-top: 1.5rem;
        }
        .related-links li {
            margin-bottom: 1rem;
            padding: 0.8rem;
            background: #f1f8ff;
            border-radius: 8px;
            transition: transform 0.3s;
        }
        .related-links li:hover {
            transform: translateX(5px);
            background: #e1f0ff;
        }
        .related-links a {
            text-decoration: none;
            color: #333;
            display: block;
            font-weight: 500;
        }
        .related-links a:hover { color: #1a2980; }
        .site-footer {
            background: linear-gradient(90deg, #1a2980, #16256d);
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: #ffcc00;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem;
            background: rgba(255,255,255,0.1);
            margin-bottom: 0.8rem;
            border-radius: 6px;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: rgba(255,255,255,0.2);
        }
        friend-link a {
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        friend-link i { color: #ffcc00; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.2);
            font-size: 0.9rem;
            color: #ccc;
        }
        @media (max-width: 1024px) {
            .main-container { grid-template-columns: 1fr; }
            .sidebar { position: static; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #1a2980;
                padding: 1rem;
                border-top: 1px solid rgba(255,255,255,0.1);
            }
            .main-nav.active ul { display: flex; }
            .header-container { flex-wrap: wrap; }
            .my-logo { font-size: 1.8rem; }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            .article-content { padding: 2rem; }
        }
        @media (max-width: 480px) {
            .search-form { flex-direction: column; }
            .search-btn { width: 100%; }
            h1 { font-size: 2rem; }
            .article-meta { flex-direction: column; gap: 0.5rem; }
        }