:root {
            --primary: #2E7D32;
            --primary-dark: #1B5E20;
            --secondary: #FF9800;
            --accent: #0288D1;
            --light: #F5F5F5;
            --dark: #212121;
            --gray: #757575;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f9f9f9;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--accent);
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1px;
            display: flex;
            align-items: center;
        }
        .my-logo i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .my-logo:hover {
            color: var(--primary-dark);
        }
        .search-form {
            display: flex;
            width: 300px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #ddd;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--accent);
        }
        .search-form button {
            background-color: var(--accent);
            color: white;
            border: none;
            border-radius: 0 var(--radius) var(--radius) 0;
            padding: 0 20px;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #0277BD;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--dark);
            cursor: pointer;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            background-color: var(--primary);
            border-radius: var(--radius);
            overflow: hidden;
        }
        .main-nav li {
            flex: 1;
            text-align: center;
        }
        .main-nav a {
            display: block;
            padding: 18px 20px;
            color: white;
            font-weight: 600;
            transition: var(--transition);
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: var(--primary-dark);
            color: white;
        }
        .breadcrumb {
            padding: 12px 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 40px;
            border-bottom: 2px solid var(--light);
            padding-bottom: 25px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            color: var(--gray);
            font-size: 0.95rem;
        }
        .update-time {
            background-color: #E8F5E9;
            padding: 8px 15px;
            border-radius: 50px;
            font-weight: 600;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 1px dashed #ddd;
        }
        h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--gray);
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--dark);
            background-color: #F1F8E9;
            padding: 20px;
            border-left: 5px solid var(--secondary);
            border-radius: 0 var(--radius) var(--radius) 0;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #FFF3E0;
            padding: 25px;
            border-radius: var(--radius);
            margin: 30px 0;
            border-left: 5px solid var(--secondary);
        }
        .highlight strong {
            color: var(--primary-dark);
        }
        .feature-img {
            width: 100%;
            border-radius: var(--radius);
            margin: 30px 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
        }
        .tip {
            display: inline-flex;
            align-items: center;
            background-color: #E3F2FD;
            padding: 15px;
            border-radius: var(--radius);
            margin: 15px 0;
            width: 100%;
        }
        .tip i {
            color: var(--accent);
            margin-right: 15px;
            font-size: 1.5rem;
        }
        .quote {
            font-style: italic;
            color: var(--gray);
            border-left: 4px solid var(--primary);
            padding-left: 20px;
            margin: 30px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            padding: 25px;
            border-radius: var(--radius);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-card .number {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1;
        }
        .interactive-box {
            background-color: var(--light);
            border-radius: var(--radius);
            padding: 30px;
            margin: 40px 0;
            border: 1px solid #e0e0e0;
        }
        .interactive-box h3 {
            margin-top: 0;
            color: var(--primary);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 20px;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars .active {
            color: #FFC107;
        }
        input, textarea, select {
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(2, 136, 209, 0.1);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            background-color: var(--primary);
            color: white;
            padding: 15px 30px;
            border: none;
            border-radius: var(--radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .btn-accent {
            background-color: var(--accent);
        }
        .btn-accent:hover {
            background-color: #0277BD;
        }
        sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--radius);
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            color: var(--primary);
            font-size: 1.5rem;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        .link-list {
            list-style: none;
            margin: 0;
        }
        .link-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dotted #eee;
        }
        .link-list a {
            display: flex;
            align-items: center;
            color: var(--dark);
            font-weight: 500;
        }
        .link-list a:hover {
            color: var(--accent);
        }
        .link-list i {
            margin-right: 10px;
            color: var(--primary);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }
        .tag {
            background-color: #E8F5E9;
            color: var(--primary-dark);
            padding: 8px 15px;
            border-radius: 50px;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .tag:hover {
            background-color: var(--primary);
            color: white;
        }
        .site-footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 30px;
            margin-top: 50px;
        }
        .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;
        }
        .footer-links a {
            color: #ccc;
            display: block;
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: var(--radius);
            margin: 20px 0;
            border-left: 4px solid var(--secondary);
        }
        friend-link a {
            color: #FFCC80;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .search-form {
                order: 3;
                width: 100%;
                margin-top: 15px;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 20px;
                border-radius: 0;
            }
            .main-nav.active ul {
                display: flex;
            }
            .main-nav li {
                text-align: left;
            }
            .main-nav a {
                padding: 15px 20px;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            article {
                padding: 25px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }