:root {
            --primary-green: #2ecc71;
            --dark-green: #27ae60;
            --light-green: #d5f4e6;
            --earth-brown: #8b4513;
            --sun-yellow: #f1c40f;
            --text-dark: #2c3e50;
            --text-light: #7f8c8d;
            --bg-light: #f9f9f9;
            --border-color: #ecf0f1;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --radius: 12px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #fdfdfd;
            color: var(--text-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--dark-green);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--earth-brown);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-green), var(--dark-green));
            padding: 1.5rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.4rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .my-logo i {
            color: var(--sun-yellow);
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .desktop-nav {
                display: none;
            }
        }
        .desktop-nav a {
            color: white;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: var(--radius);
        }
        .desktop-nav 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: 8px;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: white;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            box-shadow: var(--shadow);
            border-radius: 0 0 var(--radius) var(--radius);
            padding: 1rem;
            z-index: 999;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-dark);
            font-weight: 600;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 1.2rem 0;
            background-color: var(--bg-light);
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb span {
            color: var(--text-dark);
            font-weight: 600;
        }
        .search-section {
            background: linear-gradient(to right, var(--light-green), #e8f6f3);
            padding: 2.5rem 1rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex: 1;
            padding: 16px 20px;
            border: 2px solid var(--primary-green);
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: box-shadow 0.3s;
        }
        .search-input:focus {
            box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.3);
        }
        .search-btn {
            background-color: var(--primary-green);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 0 30px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background-color: var(--dark-green);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        @media (max-width: 768px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 1.5rem;
            margin-bottom: 2rem;
            border-bottom: 2px solid var(--border-color);
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .update-time {
            color: var(--dark-green);
            font-weight: 600;
        }
        h1 {
            color: var(--text-dark);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            color: var(--dark-green);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px dashed var(--light-green);
        }
        h3 {
            color: var(--earth-brown);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--text-dark);
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
            text-align: justify;
        }
        .highlight {
            background-color: var(--light-green);
            border-left: 5px solid var(--primary-green);
            padding: 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 2rem 0;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .internal-links {
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 12px;
            list-style: none;
        }
        .internal-links li {
            padding: 10px;
        }
        .internal-links a {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .internal-links i {
            color: var(--primary-green);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .widget {
            background: white;
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: var(--dark-green);
        }
        .rating-widget form, .comment-widget form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .star-rating {
            display: flex;
            gap: 8px;
            font-size: 1.8rem;
            color: #ddd;
            margin: 10px 0;
        }
        .star-rating .star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: var(--sun-yellow);
        }
        .form-input, .form-textarea {
            padding: 14px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 1rem;
            width: 100%;
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--primary-green);
            color: white;
            border: none;
            padding: 14px 24px;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-btn:hover {
            background-color: var(--dark-green);
        }
        .site-footer {
            background-color: var(--text-dark);
            color: white;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin: 1.5rem 0;
        }
        .friend-links a {
            color: var(--primary-green);
            background: rgba(255, 255, 255, 0.1);
            padding: 8px 16px;
            border-radius: 20px;
        }
        .friend-links a:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .bold {
            font-weight: 800;
            color: var(--dark-green);
        }
        @media (max-width: 576px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            .article-content { padding: 1.5rem; }
            .search-form { flex-direction: column; }
            .search-btn { padding: 16px; }
        }