* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-green: #2ecc71;
            --secondary-green: #27ae60;
            --dark-green: #229954;
            --accent-red: #e74c3c;
            --accent-yellow: #f1c40f;
            --light-bg: #f9f9f9;
            --dark-text: #2c3e50;
            --medium-gray: #95a5a6;
            --border-color: #ecf0f1;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--dark-text);
            background-color: var(--light-bg);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-green);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent-yellow);
        }
        .my-logo:hover {
            color: var(--dark-green);
            transform: scale(1.02);
            transition: var(--transition);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            text-decoration: none;
            color: var(--dark-text);
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 4px;
            transition: var(--transition);
        }
        .main-nav a:hover {
            background-color: var(--primary-green);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--dark-text);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #f1f8e9;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 10px;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--medium-gray);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary-green);
        }
        .breadcrumb .separator {
            margin: 0 8px;
            color: var(--medium-gray);
        }
        .article-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .article-content {
                grid-template-columns: 1fr;
            }
        }
        .sidebar {
            background: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .search-widget, .rating-widget, .comment-widget {
            margin-bottom: 30px;
        }
        .widget-title {
            font-size: 1.2rem;
            margin-bottom: 15px;
            color: var(--dark-green);
            border-left: 4px solid var(--primary-green);
            padding-left: 10px;
        }
        .search-form input {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--primary-green);
        }
        .search-form button {
            width: 100%;
            margin-top: 10px;
            padding: 12px;
            background: var(--primary-green);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--dark-green);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin: 20px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: var(--medium-gray);
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: var(--accent-yellow);
        }
        .rating-form button {
            width: 100%;
            padding: 10px;
            background: var(--accent-yellow);
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
        }
        .comment-form textarea {
            width: 100%;
            height: 120px;
            padding: 15px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            resize: vertical;
            font-family: inherit;
            margin-bottom: 10px;
        }
        .comment-form button {
            width: 100%;
            padding: 12px;
            background: var(--dark-green);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
        }
        .article-main h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            color: var(--dark-green);
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 3px solid var(--accent-yellow);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding: 15px;
            background: #e8f6f3;
            border-radius: 8px;
            flex-wrap: wrap;
            gap: 15px;
        }
        .update-time {
            color: var(--medium-gray);
            font-size: 0.9rem;
        }
        .word-count {
            background: var(--primary-green);
            color: white;
            padding: 5px 12px;
            border-radius: 20px;
            font-weight: 600;
        }
        .featured-image {
            width: 100%;
            border-radius: 12px;
            margin: 30px 0;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .featured-image:hover {
            transform: scale(1.01);
        }
        .article-main h2 {
            font-size: 2rem;
            color: var(--dark-green);
            margin: 40px 0 20px;
            padding-left: 15px;
            border-left: 5px solid var(--accent-red);
        }
        .article-main h3 {
            font-size: 1.6rem;
            color: var(--secondary-green);
            margin: 30px 0 15px;
        }
        .article-main h4 {
            font-size: 1.3rem;
            color: var(--primary-green);
            margin: 25px 0 12px;
        }
        .article-main p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e8f6f3 0%, #d1f2eb 100%);
            border-left: 4px solid var(--primary-green);
            padding: 25px;
            border-radius: 0 12px 12px 0;
            margin: 30px 0;
        }
        .key-point {
            background: #fffde7;
            border: 2px solid var(--accent-yellow);
            padding: 20px;
            border-radius: 12px;
            margin: 25px 0;
        }
        .internal-links {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 12px;
            margin: 30px 0;
        }
        .internal-links h3 {
            color: var(--dark-text);
            margin-top: 0;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin-top: 15px;
        }
        .links-grid a {
            display: block;
            padding: 12px 15px;
            background: white;
            border-radius: 8px;
            text-decoration: none;
            color: var(--dark-green);
            font-weight: 600;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .links-grid a:hover {
            background: var(--primary-green);
            color: white;
            transform: translateY(-3px);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            box-shadow: var(--shadow);
            border-radius: 8px;
            overflow: hidden;
        }
        .data-table th {
            background: var(--dark-green);
            color: white;
            padding: 15px;
            text-align: left;
        }
        .data-table td {
            padding: 12px 15px;
            border-bottom: 1px solid var(--border-color);
        }
        .data-table tr:nth-child(even) {
            background: #f8f9fa;
        }
        .data-table tr:hover {
            background: #e8f6f3;
        }
        .site-footer {
            background: var(--dark-text);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: var(--primary-green);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-green);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 10px 0;
            padding: 8px 15px;
            background: rgba(255,255,255,0.1);
            border-radius: 6px;
        }
        friend-link a {
            color: var(--accent-yellow) !important;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .article-main h1 {
                font-size: 2.2rem;
            }
            .article-main h2 {
                font-size: 1.8rem;
            }
            .article-main h3 {
                font-size: 1.4rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
            }
            .header-content {
                padding: 12px 0;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-main {
            animation: fadeIn 0.8s ease-out;
        }
        .highlight {
            background: linear-gradient(120deg, #a8e6cf 0%, #dcedc1 100%);
            padding: 3px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 8px;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--medium-gray);
            padding-left: 20px;
            margin: 25px 0;
            color: #555;
        }
        .button-link {
            display: inline-block;
            background: var(--primary-green);
            color: white;
            padding: 12px 25px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            margin: 10px 5px;
        }
        .button-link:hover {
            background: var(--dark-green);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }