* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-green: #00a82d;
            --secondary-green: #007a20;
            --accent-brown: #8b4513;
            --light-cream: #f5f5dc;
            --dark-gray: #333;
            --medium-gray: #666;
            --light-gray: #f0f0f0;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--dark-gray);
            background-color: #fff;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
            padding: 1.5rem 0;
            border-bottom: 5px solid var(--accent-brown);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo i {
            color: #ffd700;
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 12px 20px;
            border-radius: 5px;
            margin: 10px 0 25px;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--secondary-green);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent-brown);
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--medium-gray);
        }
        nav {
            display: flex;
            gap: 25px;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 8px 15px;
            border-radius: 4px;
            transition: var(--transition);
        }
        nav a:hover {
            background-color: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
        }
        .search-container {
            background-color: var(--light-cream);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 20px;
            border: 2px solid var(--primary-green);
            border-radius: 5px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary-green);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--secondary-green);
            transform: scale(1.05);
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        @media (max-width: 768px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        main {
            background-color: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--secondary-green);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            border-bottom: 3px solid var(--accent-brown);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--primary-green);
            font-size: 2rem;
            margin: 2.5rem 0 1.5rem;
            padding-left: 15px;
            border-left: 5px solid var(--accent-brown);
        }
        h3 {
            color: var(--secondary-green);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--accent-brown);
            font-size: 1.3rem;
            margin: 1.5rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--medium-gray);
            background-color: var(--light-gray);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary-green);
        }
        .highlight {
            background-color: #e8f5e9;
            padding: 2rem;
            border-radius: 8px;
            border: 2px dashed var(--primary-green);
            margin: 2rem 0;
        }
        .content-link {
            color: var(--secondary-green);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border-bottom: 2px dotted transparent;
        }
        .content-link:hover {
            color: var(--accent-brown);
            border-bottom-color: var(--accent-brown);
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.02);
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }
        aside {
            background-color: var(--light-gray);
            padding: 1.5rem;
            border-radius: 10px;
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar-section {
            margin-bottom: 2rem;
        }
        .sidebar-section h3 {
            font-size: 1.3rem;
            color: var(--secondary-green);
            margin-bottom: 1rem;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--accent-brown);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
        }
        .related-links li:before {
            content: "▶";
            color: var(--primary-green);
            position: absolute;
            left: 0;
            font-size: 0.8rem;
        }
        .related-links a {
            color: var(--dark-gray);
            text-decoration: none;
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--primary-green);
            padding-left: 5px;
        }
        .user-interaction {
            background-color: var(--light-cream);
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 1.5rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--secondary-green);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary-green);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0,168,45,0.2);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ddd;
            margin: 10px 0;
        }
        .rating-stars .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #ffd700;
            transform: scale(1.2);
        }
        .submit-btn {
            background-color: var(--primary-green);
            color: white;
            border: none;
            padding: 14px 30px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            display: block;
            width: 100%;
        }
        .submit-btn:hover {
            background-color: var(--secondary-green);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0,0,0,0.1);
        }
        footer {
            background-color: var(--dark-gray);
            color: white;
            padding: 3rem 2rem;
            margin-top: 4rem;
            border-radius: 10px 10px 0 0;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 2rem;
        }
        friend-link {
            display: block;
            margin: 15px 0;
        }
        friend-link a {
            color: #90caf9;
            text-decoration: none;
            transition: var(--transition);
        }
        friend-link a:hover {
            color: white;
            text-decoration: underline;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #555;
            color: #aaa;
            font-size: 0.9rem;
        }
        .update-time {
            background-color: #fff3cd;
            color: #856404;
            padding: 15px;
            border-radius: 5px;
            margin: 20px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .bold-text {
            font-weight: 800;
            color: var(--secondary-green);
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }
        .mt-3 {
            margin-top: 3rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }
            nav {
                flex-direction: column;
                width: 100%;
                display: none;
            }
            nav.active {
                display: flex;
            }
            .hamburger {
                display: flex;
                position: absolute;
                right: 20px;
                top: 25px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            header, footer, .user-interaction, .search-container, aside {
                display: none;
            }
            body {
                max-width: 100%;
                padding: 0;
            }
            main {
                box-shadow: none;
                padding: 0;
            }
        }