* { 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%, #f0f2f5 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-family: 'Georgia', serif; color: #2c3e50; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); text-align: center; border-bottom: 4px solid #e74c3c; padding-bottom: 1rem; margin-top: 1.5rem; }
        h2 { font-size: 2rem; color: #34495e; margin-top: 2.5rem; padding-left: 0.5rem; border-left: 5px solid #e74c3c; }
        h3 { font-size: 1.6rem; color: #2c3e50; margin-top: 2rem; }
        h4 { font-size: 1.3rem; color: #7f8c8d; margin-top: 1.5rem; }
        p { margin-bottom: 1.5rem; text-align: justify; hyphens: auto; }
        strong { color: #c0392b; font-weight: 700; }
        em { font-style: italic; color: #555; }
        .lead { font-size: 1.3rem; color: #2c3e50; font-weight: 500; }
        .highlight { background-color: #ffeaa7; padding: 0.2rem 0.5rem; border-radius: 3px; }
        .container {
            width: min(95%, 1200px);
            margin: 0 auto;
            padding: 0 1rem;
        }
        main { padding: 2rem 0; background-color: #fff; box-shadow: 0 0 30px rgba(0,0,0,0.05); border-radius: 10px; margin-top: 1rem; }
        header { background-color: #2c3e50; color: #ecf0f1; padding: 1rem 0; position: sticky; top: 0; z-index: 1000; }
        .header-content { display: flex; justify-content: space-between; align-items: center; }
        .logo a {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            color: #e74c3c;
            text-decoration: none;
            letter-spacing: 2px;
            text-shadow: 3px 3px 0 #000;
            transition: all 0.3s ease;
        }
        .logo a:hover { color: #ff6b6b; text-shadow: 5px 5px 0 #000; transform: scale(1.05); }
        .logo .tagline { font-size: 0.9rem; color: #bdc3c7; margin-top: -5px; }
        nav { display: flex; align-items: center; }
        .nav-links { display: flex; list-style: none; }
        .nav-links li { margin-left: 2rem; }
        .nav-links a {
            color: #ecf0f1;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s;
        }
        .nav-links a:hover { color: #e74c3c; }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: #e74c3c;
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.8rem;
            color: #ecf0f1;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-links {
                position: fixed;
                top: 70px;
                right: -100%;
                flex-direction: column;
                background-color: #2c3e50;
                width: 100%;
                text-align: center;
                transition: right 0.5s ease;
                padding: 2rem 0;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            .nav-links.active { right: 0; }
            .nav-links li { margin: 1.5rem 0; }
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #7f8c8d;
        }
        .breadcrumb a { color: #3498db; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb span { color: #e74c3c; }
        .search-container { margin: 2rem auto; max-width: 600px; }
        .search-form { display: flex; }
        .search-form input[type="search"] {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: 2px solid #ddd;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input[type="search"]:focus { border-color: #e74c3c; }
        .search-form button {
            background-color: #e74c3c;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-form button:hover { background-color: #c0392b; }
        .article-content { padding: 2rem; }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #bdc3c7;
            color: #7f8c8d;
            font-size: 0.95rem;
        }
        .update-time { color: #e74c3c; font-weight: bold; }
        .featured-img {
            float: right;
            margin: 0 0 2rem 2rem;
            max-width: 500px;
            border-radius: 10px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            border: 5px solid #fff;
            outline: 1px solid #eee;
        }
        @media (max-width: 768px) {
            .featured-img { float: none; margin: 1rem auto; display: block; }
        }
        .content-section { margin-bottom: 3rem; clear: both; }
        .quote {
            background: linear-gradient(145deg, #f8f9fa, #e9ecef);
            border-left: 5px solid #e74c3c;
            padding: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            border-radius: 0 10px 10px 0;
            box-shadow: inset 0 2px 5px rgba(0,0,0,0.05);
        }
        .data-box {
            background-color: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 10px;
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .data-box h4 { margin-top: 0; }
        ul, ol { margin-left: 2rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        a.content-link {
            color: #2980b9;
            text-decoration: none;
            border-bottom: 1px dotted #2980b9;
            transition: all 0.2s;
        }
        a.content-link:hover { color: #e74c3c; border-bottom: 2px solid #e74c3c; }
        .interaction-section {
            background-color: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            margin-top: 3rem;
            border-top: 5px solid #3498db;
        }
        .interaction-section h2 { border-left-color: #3498db; }
        .rating-form, .comment-form { margin-top: 2rem; }
        .stars { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
        .star { cursor: pointer; font-size: 2rem; color: #ddd; transition: color 0.2s; }
        .star:hover, .star.active { color: #f39c12; }
        .form-group { margin-bottom: 1.5rem; }
        .form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
            outline: none;
            border-color: #3498db;
            box-shadow: 0 0 5px rgba(52, 152, 219, 0.3);
        }
        .btn {
            background-color: #2ecc71;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: bold;
            transition: background 0.3s, transform 0.2s;
        }
        .btn:hover { background-color: #27ae60; transform: translateY(-2px); }
        .btn-submit { background-color: #e74c3c; }
        .btn-submit:hover { background-color: #c0392b; }
        footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 { color: #ecf0f1; border-left: 4px solid #e74c3c; padding-left: 0.5rem; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover { color: #e74c3c; padding-left: 5px; }
        friend-link {
            display: block;
            background-color: #34495e;
            padding: 1rem;
            border-radius: 5px;
            margin-bottom: 1rem;
        }
        friend-link a { color: #3498db; font-weight: bold; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }