:root {
            --primary: #2E8B57; 
            --secondary: #FFD700; 
            --accent: #8A2BE2; 
            --light: #F5F5F5;
            --dark: #333333;
            --text: #444444;
            --shadow: rgba(0, 0, 0, 0.1);
            --radius: 12px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary), #1e6b45);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .breadcrumb {
            background-color: #e9f5eb;
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li {
            margin-right: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin-left: 10px;
            color: #777;
        }
        .nav-desktop {
            display: flex;
            gap: 25px;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 6px;
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.15);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--primary);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 20px;
            box-shadow: 0 10px 15px var(--shadow);
            z-index: 999;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            font-weight: 600;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .search-container {
            background-color: var(--light);
            padding: 30px 0;
            margin: 25px 0;
            border-radius: var(--radius);
            text-align: center;
            box-shadow: inset 0 2px 5px var(--shadow);
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary);
        }
        .search-btn {
            background: linear-gradient(to right, var(--primary), var(--accent));
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(46, 139, 87, 0.4);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: 0 5px 20px var(--shadow);
        }
        h1, h2, h3, h4 {
            color: var(--dark);
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 15px;
            margin-top: 0;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
        }
        h2 {
            font-size: 2rem;
            color: #2a7a4e;
        }
        h3 {
            font-size: 1.6rem;
            color: var(--accent);
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
        }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: #555;
            background-color: #f0f8f4;
            padding: 20px;
            border-left: 5px solid var(--secondary);
            border-radius: 0 var(--radius) var(--radius) 0;
            margin-bottom: 2em;
        }
        .highlight {
            background-color: #fff9db;
            padding: 20px;
            border-radius: var(--radius);
            border: 1px dashed var(--secondary);
            margin: 25px 0;
        }
        .highlight strong {
            color: #d48806;
        }
        .tip-box {
            background-color: #e6f7ff;
            border-left: 5px solid #1890ff;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .tip-box i {
            color: #1890ff;
            margin-right: 10px;
        }
        .info-box {
            display: flex;
            align-items: flex-start;
            background: #f9f0ff;
            padding: 25px;
            border-radius: var(--radius);
            margin: 25px 0;
            gap: 20px;
        }
        .info-box i {
            color: var(--accent);
            font-size: 2rem;
            flex-shrink: 0;
        }
        .emphasis {
            font-weight: 700;
            color: var(--primary);
        }
        .link-list {
            list-style: none;
            padding: 20px;
            background: var(--light);
            border-radius: var(--radius);
            margin: 25px 0;
        }
        .link-list li {
            padding: 12px 0;
            border-bottom: 1px dashed #ccc;
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .link-list a {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .link-list a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        .article-image {
            margin: 30px 0;
            text-align: center;
        }
        .article-image figcaption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: 0 5px 15px var(--shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--light);
        }
        .popular-links a {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid #eee;
            color: var(--dark);
        }
        .popular-links a:hover {
            color: var(--primary);
            padding-left: 10px;
        }
        .popular-links i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .rating-widget, .comment-widget {
            background: white;
            padding: 30px;
            border-radius: var(--radius);
            box-shadow: 0 5px 20px var(--shadow);
            margin-top: 40px;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            margin: 10px 0;
        }
        .stars .star:hover,
        .stars .star.active {
            color: var(--secondary);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 139, 87, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(to right, var(--primary), #3cb371);
            color: white;
            border: none;
            padding: 18px;
            border-radius: var(--radius);
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #26734d, #2E8B57);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(46, 139, 87, 0.4);
        }
        .site-footer {
            background: var(--dark);
            color: #ccc;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-widget h4 {
            color: white;
            margin-top: 0;
            padding-bottom: 15px;
            border-bottom: 1px solid #444;
        }
        .friend-links {
            list-style: none;
        }
        .friend-links li {
            padding: 10px 0;
            border-bottom: 1px solid #444;
        }
        .friend-links li:last-child {
            border-bottom: none;
        }
        .friend-links a {
            color: #aaa;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .friend-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #888;
        }
        .update-time {
            display: inline-block;
            background-color: #333;
            color: #ffd700;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.9rem;
            margin-top: 20px;
        }
        .text-center { text-align: center; }
        .mt-4 { margin-top: 2rem; }
        .mb-4 { margin-bottom: 2rem; }
        .emoji { font-size: 1.2em; }
        @media (max-width: 768px) {
            .article-content, .sidebar-widget, .rating-widget, .comment-widget {
                padding: 25px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-btn {
                justify-content: center;
            }
        }