:root {
            --primary: #2a9d8f;
            --secondary: #264653;
            --accent: #e9c46a;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f5f7fa;
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--secondary);
            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: 1.8rem;
            font-weight: 700;
            color: var(--accent);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: white;
        }
        .my-logo i {
            font-size: 2rem;
        }
        .search-form {
            display: flex;
            max-width: 400px;
            flex-grow: 1;
            margin: 0 30px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 10px 15px;
            border: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #21867a;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav {
            background-color: rgba(38, 70, 83, 0.95);
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .nav-links {
            display: flex;
            list-style: none;
            justify-content: center;
            flex-wrap: wrap;
        }
        .nav-links li {
            position: relative;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            padding: 18px 22px;
            display: inline-block;
            font-weight: 500;
            transition: var(--transition);
            border-bottom: 3px solid transparent;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background-color: rgba(42, 157, 143, 0.2);
            border-bottom-color: var(--accent);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 12px 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px;
            overflow: hidden;
        }
        .article-header {
            margin-bottom: 30px;
            border-bottom: 2px solid var(--light);
            padding-bottom: 25px;
        }
        h1 {
            color: var(--secondary);
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--gray);
            font-size: 0.95rem;
            flex-wrap: wrap;
            gap: 15px;
        }
        .update-time {
            background-color: #fff3cd;
            color: #856404;
            padding: 5px 12px;
            border-radius: 20px;
            font-weight: 600;
        }
        .featured-img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: var(--radius);
            margin: 25px 0;
            box-shadow: 0 6px 16px rgba(0,0,0,0.15);
            transition: transform 0.5s ease;
        }
        .featured-img:hover {
            transform: scale(1.01);
        }
        h2 {
            color: var(--secondary);
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
        }
        h3 {
            color: var(--primary);
            font-size: 1.6rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: var(--dark);
            font-size: 1.3rem;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: #e7f5f3;
            border-left: 5px solid var(--primary);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .tip-box {
            background-color: #fff8e1;
            border: 1px dashed var(--accent);
            padding: 20px;
            border-radius: var(--radius);
            margin: 25px 0;
        }
        .tip-box i {
            color: #ff9800;
            margin-right: 10px;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
        }
        .content-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--primary);
            transition: var(--transition);
        }
        .content-link:hover {
            color: var(--secondary);
            border-bottom-style: solid;
        }
        .quote {
            font-style: italic;
            padding: 25px;
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            border-radius: var(--radius);
            margin: 30px 0;
            position: relative;
            border-left: 5px solid var(--primary);
        }
        .quote:before {
            content: "\201C";
            font-size: 4rem;
            color: var(--primary);
            opacity: 0.3;
            position: absolute;
            top: -15px;
            left: 15px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: white;
            border-radius: var(--radius);
            padding: 25px;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 5px solid var(--primary);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 10px;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 25px;
        }
        .widget-title {
            color: var(--secondary);
            font-size: 1.4rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
        }
        .related-links {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed #eee;
        }
        .related-links a {
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
        }
        .related-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        .related-links i {
            margin-right: 10px;
            color: var(--gray);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 20px 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .rating-form {
            display: none;
            margin-top: 20px;
        }
        .rating-form.show {
            display: block;
            animation: fadeIn 0.5s;
        }
        .rating-form input,
        .rating-form textarea {
            width: 100%;
            padding: 12px;
            margin-bottom: 15px;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
        }
        .rating-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: var(--radius);
            cursor: pointer;
            width: 100%;
            font-size: 1rem;
            transition: var(--transition);
        }
        .rating-form button:hover {
            background-color: #21867a;
        }
        .comments-section {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 2px solid var(--light);
        }
        .comment-form {
            background: #f8f9fa;
            padding: 25px;
            border-radius: var(--radius);
            margin-bottom: 40px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.25);
            outline: none;
        }
        .btn-submit {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 14px 30px;
            border-radius: var(--radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-submit:hover {
            background-color: #1d3557;
            transform: translateY(-2px);
        }
        .comment {
            display: flex;
            gap: 20px;
            padding: 25px 0;
            border-bottom: 1px solid #eee;
        }
        .comment-avatar {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background-color: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
            flex-shrink: 0;
        }
        .comment-content h5 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .comment-meta {
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }
        footer {
            background-color: var(--secondary);
            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-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 20px;
            display: block;
        }
        .footer-description {
            color: #adb5bd;
            margin-bottom: 25px;
        }
        .social-links {
            display: flex;
            gap: 15px;
        }
        .social-links a {
            width: 40px;
            height: 40px;
            background-color: rgba(255,255,255,0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            transition: var(--transition);
        }
        .social-links a:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }
        .footer-links h4 {
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 20px;
            border-bottom: 2px solid rgba(233, 196, 106, 0.3);
            padding-bottom: 10px;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #adb5bd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 8px;
        }
        friend-link {
            display: block;
            margin-top: 10px;
            padding: 8px 15px;
            background-color: rgba(255,255,255,0.05);
            border-radius: var(--radius);
            border-left: 3px solid var(--primary);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #adb5bd;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2.3rem;
            }
            .featured-img {
                height: 300px;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                margin: 15px 0 0;
                max-width: 100%;
                width: 100%;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            nav.active {
                display: block;
            }
            .nav-links {
                flex-direction: column;
            }
            .nav-links a {
                padding: 15px 20px;
                border-bottom: 1px solid rgba(255,255,255,0.1);
                border-left: 5px solid transparent;
            }
            .nav-links a:hover {
                border-left-color: var(--accent);
            }
            article {
                padding: 25px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            .meta {
                flex-direction: column;
                align-items: flex-start;
            }
            .comment {
                flex-direction: column;
            }
            .comment-avatar {
                align-self: flex-start;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }