* { 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: #f9f7f0;
            background-image: linear-gradient(to bottom, #f0f4e3, #e6ead5);
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a { color: #4a6b22; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #2c3e50; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 1.5em; margin-bottom: 1.5em; }
        .container { width: 100%; padding-right: 15px; padding-left: 15px; margin-right: auto; margin-left: auto; }
        .site-header {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 1.2rem 0;
            border-bottom: 5px solid #4a6b22;
            margin-bottom: 2rem;
            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;
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.8rem;
            font-weight: bold;
            color: #8bc34a;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            letter-spacing: 1px;
        }
        .my-logo a { color: inherit; text-decoration: none; }
        .my-logo a:hover { color: #c5e1a5; text-decoration: none; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
            margin: 0;
        }
        .main-nav a {
            color: #ecf0f1;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover {
            background-color: #4a6b22;
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #ecf0f1;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: #e8f5e9;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }
        .breadcrumb a { color: #388e3c; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb span { color: #666; }
        .search-container {
            background: #fff;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 2.5rem;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #8bc34a;
            border-radius: 8px 0 0 8px;
            font-size: 1.1rem;
        }
        .search-btn {
            background-color: #4a6b22;
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-btn:hover { background-color: #2c3e50; }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        @media (max-width: 992px) {
            .content-area { grid-template-columns: 1fr; }
        }
        .main-article {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
        }
        .article-header { margin-bottom: 2.5rem; }
        .article-header h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1rem;
            line-height: 1.2;
            border-bottom: 3px solid #8bc34a;
            padding-bottom: 0.7rem;
        }
        .meta-info {
            color: #7f8c8d;
            font-size: 0.95rem;
            display: flex;
            gap: 1.5rem;
            margin-bottom: 1rem;
        }
        .meta-info i { margin-right: 0.5rem; color: #4a6b22; }
        h2 {
            font-size: 2.2rem;
            color: #2c3e50;
            margin: 2.8rem 0 1.2rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #c8e6c9;
        }
        h3 {
            font-size: 1.8rem;
            color: #4a6b22;
            margin: 2.2rem 0 1rem 0;
        }
        h4 {
            font-size: 1.5rem;
            color: #556b2f;
            margin: 1.8rem 0 0.8rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.15rem;
            line-height: 1.8;
            text-align: justify;
        }
        .highlight {
            background-color: #f1f8e9;
            border-left: 5px solid #8bc34a;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box {
            background-color: #e3f2fd;
            border-left: 5px solid #2196f3;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .warning-box {
            background-color: #ffebee;
            border-left: 5px solid #f44336;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        strong { color: #2c3e50; }
        .inline-link {
            font-weight: bold;
            border-bottom: 1px dotted #4a6b22;
        }
        .article-img {
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            max-width: 900px;
        }
        .article-img img { width: 100%; transition: transform 0.5s ease; }
        .article-img:hover img { transform: scale(1.03); }
        .caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background: #f5f5f5;
            font-size: 0.95rem;
        }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
        }
        .sidebar h3 {
            font-size: 1.5rem;
            margin-top: 0;
            color: #2c3e50;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #8bc34a;
        }
        .sidebar ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebar li {
            margin-bottom: 0.9rem;
            padding-bottom: 0.9rem;
            border-bottom: 1px dotted #ddd;
        }
        .sidebar li:last-child { border-bottom: none; }
        .sidebar a { color: #4a6b22; display: block; padding: 0.3rem 0; }
        .sidebar a:hover { color: #2c3e50; padding-left: 5px; }
        .user-interaction {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
            margin-bottom: 3rem;
        }
        .interaction-title {
            font-size: 2rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            text-align: center;
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .form-group { margin-bottom: 1.5rem; }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #8bc34a;
            box-shadow: 0 0 0 3px rgba(139, 195, 74, 0.2);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffc107;
            margin: 0.5rem 0;
        }
        .rating-stars i { cursor: pointer; }
        .submit-btn {
            background-color: #4a6b22;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: bold;
            transition: background 0.3s;
        }
        .submit-btn:hover { background-color: #2c3e50; }
        .site-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 2.5rem 0 1.5rem;
            border-top: 5px solid #4a6b22;
            margin-top: 3rem;
            border-radius: 15px 15px 0 0;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h4 {
            color: #8bc34a;
            margin-bottom: 1.2rem;
            font-size: 1.4rem;
        }
        .footer-section ul { list-style: none; padding-left: 0; }
        .footer-section li { margin-bottom: 0.7rem; }
        .footer-section a { color: #bdc3c7; }
        .footer-section a:hover { color: #8bc34a; }
        friend-link {
            display: block;
            background: #34495e;
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 4px solid #8bc34a;
        }
        friend-link a { color: #ecf0f1; font-weight: bold; }
        friend-link a:hover { color: #8bc34a; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6b22;
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .my-logo { margin-bottom: 1rem; }
            .main-nav { width: 100%; }
            .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: 0.8rem 1rem;
                border-bottom: 1px solid #34495e;
            }
            .hamburger { display: block; align-self: flex-end; margin-top: -3.5rem; }
            .article-header h1 { font-size: 2.2rem; }
            h2 { font-size: 1.9rem; }
            h3 { font-size: 1.6rem; }
            .main-article, .user-interaction { padding: 1.8rem; }
            .form-grid { grid-template-columns: 1fr; }
        }