* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(135deg, #1a5276 0%, #2e86c1 100%);
            color: white;
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-radius: 0 0 10px 10px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            padding: 0 1rem;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 800;
            color: #FFD700;
            text-decoration: none;
            font-family: 'Georgia', serif;
            letter-spacing: 2px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover { color: #fff; text-shadow: 0 0 8px #FFD700; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: #fff;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.75rem;
            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;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 1rem 0;
            font-size: 0.9rem;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #3498db;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-container {
            background: #fff;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            margin: 2rem 0;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex: 1;
            padding: 0.85rem 1rem;
            border: 2px solid #ddd;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-input:focus { border-color: #2e86c1; }
        .search-btn {
            background: #2e86c1;
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #1a5276; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        .article-content {
            background: #fff;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .article-meta {
            color: #7f8c8d;
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eee;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a5276;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: #2e86c1;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        h3 {
            font-size: 1.6rem;
            color: #16a085;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #e67e22;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .lead {
            font-size: 1.3rem;
            color: #2c3e50;
            font-weight: 500;
            margin-bottom: 2rem;
            padding-left: 1rem;
            border-left: 4px solid #2e86c1;
        }
        em { color: #c0392b; }
        strong {
            color: #1a5276;
            font-weight: 700;
        }
        .highlight-box {
            background: #e8f4fc;
            border-left: 5px solid #2e86c1;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip {
            background: #fffde7;
            border-left: 5px solid #f1c40f;
            padding: 1rem;
            margin: 1.5rem 0;
        }
        .content-link {
            color: #2980b9;
            text-decoration: none;
            border-bottom: 1px dotted #2980b9;
            padding-bottom: 1px;
        }
        .content-link:hover {
            color: #1a5276;
            border-bottom: 2px solid #1a5276;
        }
        .article-img {
            margin: 2rem auto;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .article-img figcaption {
            text-align: center;
            font-style: italic;
            color: #7f8c8d;
            padding: 0.8rem;
            font-size: 0.95rem;
        }
        .interactive-section {
            background: #fff;
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            box-shadow: 0 4px 10px rgba(0,0,0,0.06);
        }
        .section-title {
            color: #1a5276;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 500px;
        }
        .star-rating {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ddd;
            margin-bottom: 1rem;
        }
        .star-rating .star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #FFD700;
        }
        .form-group { display: flex; flex-direction: column; gap: 0.5rem; }
        .form-input, .form-textarea {
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-textarea { min-height: 120px; resize: vertical; }
        .form-submit {
            background: #27ae60;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            font-size: 1rem;
            align-self: flex-start;
            transition: background 0.3s;
        }
        .form-submit:hover { background: #219653; }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 1rem 1.5rem;
            margin-top: 4rem;
            border-radius: 10px 10px 0 0;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-logo { font-size: 2rem; font-weight: bold; color: #FFD700; }
        .footer-heading {
            color: #bdc3c7;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a {
            color: #95a5a6;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover { color: #fff; }
        friend-link {
            display: block;
            background: #34495e;
            padding: 1rem;
            border-radius: 5px;
            margin-top: 1rem;
        }
        friend-link a {
            color: #1abc9c !important;
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .main-nav { width: 100%; margin-top: 1rem; }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
                display: none;
            }
            .main-nav ul.active { display: flex; }
            .main-nav li { width: 100%; }
            .main-nav a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .article-content { padding: 1.5rem; }
            .search-form { flex-direction: column; }
            .search-input, .search-btn { border-radius: 50px; margin-bottom: 0.5rem; }
        }