:root {
            --primary: #2E7D32;
            --primary-dark: #1B5E20;
            --secondary: #FF9800;
            --accent: #2196F3;
            --light: #F5F5F5;
            --dark: #212121;
            --gray: #757575;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
            font-size: 2rem;
        }
        .my-logo:hover {
            color: var(--primary-dark);
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 12px 0;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .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: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb [aria-current="page"] {
            color: var(--dark);
            font-weight: 600;
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .nav-list a {
            font-weight: 600;
            color: var(--dark);
            padding: 5px 0;
            position: relative;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary);
            transition: var(--transition);
        }
        .nav-list a:hover::after,
        .nav-list a:focus::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--primary);
            cursor: pointer;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0 60px;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-header {
            border-bottom: 2px solid var(--light);
            padding-bottom: 25px;
            margin-bottom: 35px;
        }
        .article-title {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .article-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: 5px 12px;
            border-radius: 20px;
            font-weight: 600;
        }
        .article-body h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 45px 0 20px;
            padding-bottom: 10px;
            border-bottom: 1px dashed #ddd;
        }
        .article-body h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin: 35px 0 15px;
        }
        .article-body h4 {
            font-size: 1.3rem;
            color: var(--gray);
            margin: 25px 0 12px;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 22px;
            text-align: justify;
        }
        .article-body strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        .article-body em {
            color: var(--secondary);
            font-style: italic;
        }
        .highlight-box {
            background-color: #F1F8E9;
            border-left: 5px solid var(--secondary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .featured-image {
            margin: 35px auto;
            text-align: center;
        }
        .featured-image img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            max-height: 500px;
            object-fit: cover;
            width: 100%;
        }
        .image-caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .internal-links {
            background-color: var(--light);
            padding: 20px;
            border-radius: var(--radius);
            margin: 30px 0;
        }
        .internal-links h4 {
            margin-top: 0;
        }
        .internal-links ul {
            list-style: square inside;
            column-count: 2;
            column-gap: 30px;
        }
        .internal-links li {
            margin-bottom: 8px;
            break-inside: avoid;
        }
        @media (max-width: 768px) {
            .internal-links ul {
                column-count: 1;
            }
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 14px 18px;
            border: 2px solid #ddd;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--accent);
        }
        .search-button {
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 0 var(--radius) var(--radius) 0;
            padding: 0 22px;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: var(--primary-dark);
        }
        .rating-form,
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-label {
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-input,
        .form-textarea,
        .form-select {
            padding: 14px;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus,
        .form-textarea:focus,
        .form-select:focus {
            outline: none;
            border-color: var(--accent);
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars i:hover,
        .stars i.active {
            color: #FFC107;
        }
        .submit-button {
            background-color: var(--secondary);
            color: white;
            border: none;
            border-radius: var(--radius);
            padding: 16px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-button:hover {
            background-color: #F57C00;
        }
        .site-footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 30px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: bold;
            color: white;
            margin-bottom: 20px;
            display: inline-block;
        }
        .footer-links h4 {
            color: var(--secondary);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: var(--radius);
            margin-bottom: 10px;
            font-weight: 600;
        }
        friend-link a {
            color: var(--secondary);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                align-items: center;
                padding: 30px 0;
                box-shadow: var(--shadow);
                transform: translateY(-100%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                z-index: 999;
            }
            .nav-list.active {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .article-title {
                font-size: 2.2rem;
            }
            .header-inner,
            .article-content,
            .sidebar-widget {
                padding-left: 15px;
                padding-right: 15px;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .divider {
            height: 1px;
            background: linear-gradient(to right, transparent, #ddd, transparent);
            margin: 40px 0;
        }