* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-green: #3b8526;
            --dark-green: #2a5c1a;
            --light-green: #5fb53f;
            --brown: #8b4513;
            --light-brown: #a0522d;
            --dark-gray: #333;
            --medium-gray: #666;
            --light-gray: #f5f5f5;
            --white: #ffffff;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark-gray);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary-green);
            color: var(--white);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--white);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo i {
            color: #f0c420;
        }
        .my-logo:hover {
            color: #f0c420;
            transform: scale(1.02);
            transition: var(--transition);
        }
        .search-form {
            display: flex;
            flex: 0 1 400px;
            max-width: 400px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 15px;
            border: none;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--dark-green);
            color: white;
            border: none;
            border-radius: 0 4px 4px 0;
            padding: 0 20px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--light-green);
        }
        nav {
            background-color: var(--dark-green);
        }
        .nav-desktop {
            display: flex;
            list-style: none;
        }
        .nav-desktop li {
            position: relative;
        }
        .nav-desktop a {
            color: var(--white);
            text-decoration: none;
            padding: 15px 20px;
            display: block;
            font-weight: 600;
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            background-color: var(--light-green);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 10px 0;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb a {
            color: var(--medium-gray);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary-green);
        }
        .breadcrumb span {
            color: var(--dark-gray);
        }
        main {
            padding: 30px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background-color: var(--white);
            padding: 40px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-green);
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid var(--light-brown);
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark-green);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed var(--light-green);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--brown);
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--medium-gray);
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        strong {
            color: var(--dark-green);
            font-weight: 700;
        }
        em {
            color: var(--light-brown);
            font-style: italic;
        }
        .highlight-box {
            background-color: #e8f5e9;
            border-left: 5px solid var(--primary-green);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .img-container {
            margin: 30px 0;
            text-align: center;
        }
        .article-img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.15);
            border: 5px solid var(--light-brown);
        }
        .caption {
            font-style: italic;
            color: var(--medium-gray);
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .content-link {
            color: var(--primary-green);
            text-decoration: none;
            border-bottom: 1px dotted var(--primary-green);
            font-weight: 600;
        }
        .content-link:hover {
            color: var(--light-green);
            border-bottom: 2px solid var(--light-green);
        }
        aside {
            background-color: var(--white);
            border-radius: 8px;
            padding: 25px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-section {
            margin-bottom: 30px;
        }
        .sidebar-section h3 {
            font-size: 1.3rem;
            color: var(--dark-green);
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 1px solid #eee;
        }
        .sidebar-list {
            list-style: none;
        }
        .sidebar-list li {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
        }
        .sidebar-list li:before {
            content: '▸';
            color: var(--primary-green);
            position: absolute;
            left: 0;
        }
        .sidebar-list a {
            color: var(--medium-gray);
            text-decoration: none;
            transition: var(--transition);
        }
        .sidebar-list a:hover {
            color: var(--primary-green);
            padding-left: 5px;
        }
        .interactive-section {
            background-color: var(--light-gray);
            padding: 30px;
            border-radius: 8px;
            margin-top: 50px;
        }
        .rating-box, .comment-box {
            margin-bottom: 40px;
        }
        .rating-box h3, .comment-box h3 {
            color: var(--dark-green);
            margin-bottom: 20px;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark-gray);
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-green);
            box-shadow: 0 0 0 2px rgba(59, 133, 38, 0.2);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .btn {
            background-color: var(--primary-green);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
            display: inline-block;
            text-decoration: none;
        }
        .btn:hover {
            background-color: var(--dark-green);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .btn i {
            margin-right: 8px;
        }
        footer {
            background-color: var(--dark-gray);
            color: var(--white);
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: var(--light-green);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--light-green);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 10px 0;
        }
        friend-link a {
            color: #4da6ff;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        .update-time {
            background-color: #fff8e1;
            padding: 10px 15px;
            border-radius: 4px;
            margin: 20px 0;
            font-style: italic;
            color: #5d4037;
            border-left: 4px solid #ffb300;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            .search-form {
                flex: 0 1 300px;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .hamburger {
                display: block;
            }
            .nav-desktop {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--dark-green);
            }
            .nav-desktop.active {
                display: flex;
            }
            .nav-desktop li {
                width: 100%;
                text-align: center;
            }
            .search-form {
                order: 3;
                flex: 1 1 100%;
                margin-top: 15px;
                max-width: 100%;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 25px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            h1 {
                font-size: 1.9rem;
            }
            .btn {
                width: 100%;
                text-align: center;
            }
            .stars {
                justify-content: center;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article {
            animation: fadeIn 0.8s ease-out;
        }