:root {
            --primary: #2E7D32;
            --primary-dark: #1B5E20;
            --secondary: #FF9800;
            --accent: #E53935;
            --light: #F5F5F5;
            --dark: #212121;
            --gray: #757575;
            --gray-light: #E0E0E0;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f8f9fa;
            color: var(--dark);
            line-height: 1.7;
            font-size: 1.05rem;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: 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: 2rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--primary-dark);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
            padding: 10px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }
        .main-nav {
            display: flex;
            background: var(--primary-dark);
            border-radius: var(--radius);
            overflow: hidden;
        }
        .main-nav a {
            color: white;
            padding: 15px 25px;
            text-align: center;
            flex: 1;
            border-right: 1px solid rgba(255,255,255,0.1);
        }
        .main-nav a:last-child {
            border-right: none;
        }
        .main-nav a:hover {
            background-color: var(--primary);
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 8px;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .search-container {
            background: white;
            padding: 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 25px 0;
            text-align: center;
        }
        .search-container h2 {
            margin-bottom: 20px;
            color: var(--primary);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex-grow: 1;
            padding: 15px;
            border: 2px solid var(--gray-light);
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
            flex: 1;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .main-article {
            background: white;
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .main-article h1 {
            color: var(--primary-dark);
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 15px;
        }
        .main-article h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-top: 10px;
            border-top: 1px solid var(--gray-light);
        }
        .main-article h3 {
            color: var(--dark);
            font-size: 1.5rem;
            margin: 30px 0 15px;
        }
        .main-article h4 {
            color: var(--gray);
            font-size: 1.2rem;
            margin: 25px 0 10px;
        }
        .article-intro {
            font-size: 1.3rem;
            color: var(--gray);
            margin-bottom: 30px;
            padding: 20px;
            background: #f0f7f0;
            border-left: 5px solid var(--primary);
            border-radius: var(--radius);
        }
        .article-content p {
            margin-bottom: 22px;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        .article-content em {
            color: var(--accent);
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
            padding: 25px;
            border-radius: var(--radius);
            margin: 30px 0;
            border-left: 5px solid var(--secondary);
        }
        .tip {
            background: #FFF8E1;
            padding: 15px 20px;
            border-radius: var(--radius);
            margin: 20px 0;
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }
        .tip i {
            color: var(--secondary);
            font-size: 1.5rem;
            margin-top: 3px;
        }
        .image-container {
            margin: 35px 0;
            text-align: center;
        }
        .article-img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 10px;
            font-style: italic;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--gray-light);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dashed var(--gray-light);
        }
        .related-links li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .related-links a {
            display: block;
            padding: 10px;
            border-radius: 5px;
            transition: var(--transition);
        }
        .related-links a:hover {
            background-color: #f0f7f0;
            text-decoration: none;
            padding-left: 15px;
        }
        .rating-widget, .comment-widget {
            background: white;
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 40px 0;
        }
        .rating-widget h2, .comment-widget h2 {
            color: var(--primary);
            margin-bottom: 25px;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0 30px;
            font-size: 2.5rem;
            color: var(--gray-light);
            cursor: pointer;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: var(--secondary);
        }
        .form-group {
            margin-bottom: 25px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 15px;
            border: 2px solid var(--gray-light);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: var(--radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: block;
            width: 100%;
        }
        .submit-btn:hover {
            background: var(--primary-dark);
            text-decoration: none;
        }
        .site-footer {
            background: var(--dark);
            color: white;
            margin-top: 60px;
            padding: 50px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 20px;
            display: block;
        }
        .footer-links a {
            color: #ccc;
            display: block;
            margin-bottom: 12px;
        }
        .footer-links a:hover {
            color: white;
            text-decoration: none;
        }
        friend-link {
            display: block;
            padding: 15px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius);
            margin-bottom: 15px;
            text-align: center;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255,255,255,0.1);
        }
        friend-link a {
            color: var(--secondary);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .hamburger {
                display: flex;
                order: 1;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                order: 3;
                margin-top: 20px;
                border-radius: var(--radius);
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav a {
                border-right: none;
                border-bottom: 1px solid rgba(255,255,255,0.1);
                text-align: left;
                padding-left: 30px;
            }
            .my-logo {
                font-size: 1.7rem;
                order: 0;
            }
            .main-article h1 {
                font-size: 2.2rem;
            }
            .main-article h2 {
                font-size: 1.8rem;
            }
            .main-article {
                padding: 25px;
            }
            .content-wrapper {
                gap: 25px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input,
            .search-form button {
                width: 100%;
                border-radius: var(--radius);
                margin-bottom: 10px;
            }
            .rating-widget, .comment-widget {
                padding: 25px;
            }
        }
        @media print {
            .site-header, .sidebar, .search-container,
            .rating-widget, .comment-widget, .site-footer {
                display: none;
            }
            body {
                font-size: 12pt;
                line-height: 1.5;
                background: white;
                color: black;
            }
            .container {
                max-width: 100%;
            }
            .main-article {
                box-shadow: none;
                padding: 0;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }