:root {
            --primary-green: #5ba150;
            --secondary-brown: #8b4513;
            --accent-blue: #4a90e2;
            --light-bg: #f9f7f1;
            --dark-text: #2c3e2c;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 12px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--dark-text);
            background-color: var(--light-bg);
            background-image: radial-gradient(#c1d9b2 1px, transparent 1px);
            background-size: 30px 30px;
        }
        a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-green);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: 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;
            border-bottom: 2px solid var(--primary-green);
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.5rem;
            font-weight: bold;
            color: var(--primary-green);
            text-shadow: 2px 2px 0 var(--secondary-brown);
            letter-spacing: -1px;
        }
        .my-logo:hover {
            color: var(--secondary-brown);
            text-shadow: 2px 2px 0 var(--primary-green);
        }
        .search-form {
            display: flex;
            flex-grow: 1;
            max-width: 500px;
            margin: 0 30px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 20px;
            border: 2px solid var(--primary-green);
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary-green);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--secondary-brown);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--primary-green);
            cursor: pointer;
        }
        nav {
            padding: 15px 0;
        }
        .nav-links {
            display: flex;
            justify-content: center;
            list-style: none;
            gap: 30px;
        }
        .nav-links a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 16px;
            border-radius: var(--border-radius);
        }
        .nav-links a:hover {
            background-color: var(--primary-green);
            color: white;
            text-decoration: none;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.95rem;
            color: #666;
        }
        .breadcrumb a {
            color: #666;
        }
        .breadcrumb a:hover {
            color: var(--primary-green);
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background-color: white;
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--secondary-brown);
            font-size: 3rem;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 4px double var(--primary-green);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--primary-green);
            font-size: 2.2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        h3 {
            color: var(--secondary-brown);
            font-size: 1.7rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: var(--accent-blue);
            font-size: 1.4rem;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.15rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            background: linear-gradient(135deg, #f0f9eb 0%, #e6f4d7 100%);
            padding: 25px;
            border-left: 5px solid var(--primary-green);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin-bottom: 30px;
        }
        .featured-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 25px 0;
            border: 5px solid var(--secondary-brown);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .highlight {
            background-color: #fff9e6;
            padding: 20px;
            border-radius: var(--border-radius);
            border-left: 5px solid #ffcc00;
            margin: 25px 0;
        }
        .download-cta {
            text-align: center;
            padding: 30px;
            background: linear-gradient(to right, var(--primary-green), #6fb863);
            color: white;
            border-radius: var(--border-radius);
            margin: 40px 0;
        }
        .download-cta h3 {
            color: white;
            margin-bottom: 15px;
        }
        .btn {
            display: inline-block;
            background-color: var(--secondary-brown);
            color: white;
            padding: 15px 30px;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1.2rem;
            margin: 10px;
            transition: var(--transition);
            border: 3px solid transparent;
        }
        .btn:hover {
            background-color: white;
            color: var(--secondary-brown);
            border-color: var(--secondary-brown);
            text-decoration: none;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 30px 0;
            padding: 20px;
            background-color: #f5f5f5;
            border-radius: var(--border-radius);
        }
        .link-list a {
            display: block;
            padding: 12px;
            background-color: white;
            border-radius: 8px;
            border: 1px solid #ddd;
        }
        .link-list a:hover {
            background-color: var(--primary-green);
            color: white;
            border-color: var(--primary-green);
        }
        .update-time {
            font-style: italic;
            color: #777;
            text-align: right;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px dashed #ccc;
        }
        aside {
            background-color: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--primary-green);
            padding-bottom: 8px;
            border-bottom: 1px solid #eee;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            font-size: 1.8rem;
            color: #ffcc00;
            cursor: pointer;
            margin: 10px 0;
        }
        .rating-stars .star:hover {
            transform: scale(1.2);
        }
        input, textarea, select {
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            width: 100%;
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--accent-blue);
            color: white;
            border: none;
            padding: 12px;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: var(--primary-green);
        }
        footer {
            background-color: var(--dark-text);
            color: #ddd;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: var(--primary-green);
            margin-bottom: 15px;
        }
        friend-link {
            display: block;
            padding: 8px 0;
            border-bottom: 1px dotted #555;
            color: #aaa;
        }
        friend-link:hover {
            color: white;
            border-bottom-color: var(--primary-green);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                max-width: 100%;
                margin: 15px 0 0;
            }
            .mobile-menu-btn {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: white;
                padding: 20px;
                border-radius: var(--border-radius);
                box-shadow: var(--shadow);
                margin-top: 15px;
            }
            .nav-links.active {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 25px;
            }
        }