* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #2E7D32;
            --primary-dark: #1B5E20;
            --primary-light: #4CAF50;
            --secondary: #FF9800;
            --secondary-dark: #F57C00;
            --dark: #263238;
            --light: #F5F5F5;
            --gray: #757575;
            --gray-light: #E0E0E0;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            color: var(--primary-dark);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav a {
            font-weight: 600;
            color: var(--dark);
            padding: 5px 0;
            position: relative;
        }
        nav a:hover {
            color: var(--primary);
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--secondary);
            transition: var(--transition);
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 15px 0;
            margin-bottom: 30px;
            border-bottom: 1px solid var(--gray-light);
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            gap: 10px;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        article {
            background-color: white;
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary-dark);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--gray-light);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--gray);
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--dark);
            background-color: #E8F5E9;
            padding: 20px;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--secondary);
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #FFF3E0;
            padding: 20px;
            border-radius: var(--border-radius);
            margin: 25px 0;
            border-left: 5px solid var(--secondary);
        }
        .tip {
            background-color: #E3F2FD;
            padding: 20px;
            border-radius: var(--border-radius);
            margin: 25px 0;
            border-left: 5px solid #2196F3;
        }
        .stat-box {
            background-color: var(--primary);
            color: white;
            padding: 25px;
            border-radius: var(--border-radius);
            text-align: center;
            margin: 25px 0;
        }
        .stat-box h3 {
            color: white;
            margin-top: 0;
            border: none;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            display: block;
            line-height: 1;
            margin: 15px 0;
        }
        ul, ol {
            margin-bottom: 20px;
            padding-left: 30px;
        }
        li {
            margin-bottom: 10px;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        label {
            font-weight: 600;
            color: var(--dark);
        }
        input, textarea, select {
            padding: 12px 15px;
            border: 1px solid var(--gray-light);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
        }
        button, .btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 14px 25px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            text-align: center;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .btn-secondary {
            background-color: var(--secondary);
        }
        .btn-secondary:hover {
            background-color: var(--secondary-dark);
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 15px 0;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .star {
            color: var(--gray-light);
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: #FFC107;
        }
        .article-image {
            margin: 30px auto;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            max-width: 800px;
        }
        .article-image figcaption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            padding: 10px;
            background-color: var(--light);
            font-size: 0.9rem;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
            box-shadow: 0 0 20px rgba(0,0,0,0.05);
        }
        th {
            background-color: var(--primary);
            color: white;
            text-align: left;
            padding: 15px;
        }
        td {
            padding: 12px 15px;
            border-bottom: 1px solid var(--gray-light);
        }
        tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        tr:hover {
            background-color: #f1f8e9;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-section ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-section li {
            margin-bottom: 12px;
        }
        .footer-section a {
            color: #BDBDBD;
        }
        .footer-section a:hover {
            color: white;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: var(--border-radius);
            margin-bottom: 10px;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255,255,255,0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #BDBDBD;
            font-size: 0.9rem;
        }
        .update-time {
            background-color: #FFF3E0;
            padding: 15px;
            border-radius: var(--border-radius);
            margin: 30px 0;
            text-align: center;
            font-weight: 600;
            color: var(--dark);
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            nav ul {
                flex-direction: column;
                gap: 15px;
                width: 100%;
                display: none;
            }
            nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
            article {
                padding: 25px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 15px;
            }
            article {
                padding: 20px;
            }
            .sidebar-widget {
                padding: 20px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
        }
        .accordion {
            margin: 25px 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }
        .accordion-header {
            background-color: var(--primary);
            color: white;
            padding: 18px 25px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            transition: var(--transition);
        }
        .accordion-header:hover {
            background-color: var(--primary-dark);
        }
        .accordion-content {
            background-color: white;
            padding: 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .accordion.active .accordion-content {
            padding: 25px;
            max-height: 2000px;
        }
        .accordion.active .accordion-header i {
            transform: rotate(180deg);
        }
        .tab-container {
            margin: 30px 0;
        }
        .tab-buttons {
            display: flex;
            border-bottom: 2px solid var(--gray-light);
        }
        .tab-button {
            padding: 15px 25px;
            background: none;
            border: none;
            cursor: pointer;
            font-weight: 600;
            color: var(--gray);
            position: relative;
            transition: var(--transition);
        }
        .tab-button.active {
            color: var(--primary);
        }
        .tab-button.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
        }
        .tab-content {
            display: none;
            padding: 25px;
            background-color: white;
            border-radius: 0 0 var(--border-radius) var(--border-radius);
        }
        .tab-content.active {
            display: block;
        }
        .search-form {
            display: flex;
            margin-bottom: 30px;
        }
        .search-form input {
            flex-grow: 1;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
        }
        .search-form button {
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            padding: 0 25px;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 30px 0;
        }
        .related-link {
            background-color: #E8F5E9;
            padding: 15px;
            border-radius: var(--border-radius);
            transition: var(--transition);
            display: block;
        }
        .related-link:hover {
            background-color: #C8E6C9;
            transform: translateY(-3px);
        }
        .text-center {
            text-align: center;
        }
        .text-primary {
            color: var(--primary);
        }
        .text-secondary {
            color: var(--secondary);
        }
        .mt-30 {
            margin-top: 30px;
        }
        .mb-30 {
            margin-bottom: 30px;
        }
        .py-20 {
            padding-top: 20px;
            padding-bottom: 20px;
        }