:root {
            --primary: #2a2d43;
            --secondary: #f0544c;
            --accent: #00b4d8;
            --light: #f8f9fa;
            --dark: #121420;
            --gray: #6c757d;
            --transition: all 0.3s ease;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
        }
        * {
            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: #333;
            background-color: #fefefe;
            overflow-x: hidden;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, #1a1c2f 100%);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-decoration: none;
            padding: 15px 0;
            display: flex;
            align-items: center;
            letter-spacing: -1px;
        }
        .my-logo span:nth-child(1) { color: var(--secondary); }
        .my-logo span:nth-child(2) { color: var(--accent); }
        .my-logo i {
            margin-right: 10px;
            font-size: 2rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .main-nav li {
            margin-left: 2px;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            padding: 20px 18px;
            display: block;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border-bottom: 3px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.08);
            border-bottom-color: var(--secondary);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 10px;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--gray);
            margin: 0 8px;
        }
        .main-container {
            max-width: 1200px;
            margin: 30px auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background: white;
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 5px solid var(--secondary);
            padding-left: 20px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        h3 {
            font-size: 1.6rem;
            color: #444;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--secondary);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--dark);
            font-weight: 500;
            margin-bottom: 2.5rem;
            background: linear-gradient(to right, #f8f9fa, #ffffff);
            padding: 25px;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--accent);
        }
        .highlight {
            background-color: #fff9e6;
            padding: 25px;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border-left: 4px solid #ffc107;
        }
        .highlight h4 {
            margin-top: 0;
            color: #d39e00;
        }
        blockquote {
            border-left: 4px solid var(--accent);
            padding-left: 25px;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background-color: #f8f9fa;
            padding: 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.01);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -1.5rem;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }
        .content-link {
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--accent);
            transition: var(--transition);
        }
        .content-link:hover {
            color: var(--secondary);
            border-bottom-style: solid;
        }
        ul, ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .feature-box {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            padding: 30px;
            border-radius: var(--border-radius);
            margin: 2.5rem 0;
            border: 1px solid #d1e3f1;
        }
        .search-box, .comment-box, .rating-box {
            margin-bottom: 40px;
        }
        .feature-box h3 {
            margin-top: 0;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-box h3 i {
            color: var(--secondary);
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        input, textarea, select {
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, var(--secondary), #e03a36);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: var(--border-radius);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
            text-align: center;
            text-decoration: none;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #e03a36, #c82333);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(240, 84, 76, 0.3);
        }
        .star-rating {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin: 15px 0;
            flex-wrap: wrap;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2.5rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffc107;
        }
        .star-rating input:checked ~ label {
            color: #ffc107;
        }
        aside {
            position: sticky;
            top: 120px;
            align-self: start;
            height: fit-content;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            padding-bottom: 15px;
            border-bottom: 2px solid #eee;
            color: var(--primary);
        }
        .related-links {
            list-style: none;
            padding-left: 0;
        }
        .related-links li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dashed #eee;
        }
        .related-links li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .related-links a {
            color: #444;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--accent);
            transform: translateX(5px);
        }
        .related-links i {
            color: var(--secondary);
            font-size: 0.9rem;
        }
        .update-time {
            background-color: #e7f7ff;
            padding: 15px;
            border-radius: var(--border-radius);
            font-size: 0.9rem;
            color: var(--primary);
            text-align: center;
            border: 1px solid #b3e0ff;
        }
        .update-time i {
            margin-right: 8px;
            color: var(--accent);
        }
        footer {
            background: var(--primary);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }
        .footer-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2rem;
            color: white;
            margin-bottom: 20px;
            display: block;
        }
        .footer-links h4 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 20px;
            border-bottom: 2px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 10px;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 25px 0;
            padding: 15px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--border-radius);
        }
        friend-link a {
            color: var(--accent) !important;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
            grid-column: 1 / -1;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
                order: 2;
            }
            article {
                order: 1;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 0 15px;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 500px;
            }
            .main-nav ul {
                flex-direction: column;
                padding: 20px 0;
            }
            .main-nav li {
                margin: 0;
            }
            .main-nav a {
                padding: 15px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                border-left: 3px solid transparent;
            }
            .main-nav a:hover,
            .main-nav a.active {
                border-left-color: var(--secondary);
                border-bottom-color: rgba(255, 255, 255, 0.1);
            }
            .main-container, .breadcrumb-container, .footer-container {
                padding: 0 15px;
            }
            article {
                padding: 25px;
            }
            .feature-box {
                padding: 20px;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 2rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .lead {
                font-size: 1.1rem;
                padding: 20px;
            }
            button, .btn {
                padding: 12px 20px;
            }
        }
        .text-center { text-align: center; }
        .text-bold { font-weight: 700; }
        .text-accent { color: var(--accent); }
        .text-secondary { color: var(--secondary); }
        .emoji { font-size: 1.2em; }
        .divider {
            height: 3px;
            background: linear-gradient(to right, transparent, var(--secondary), transparent);
            margin: 2.5rem 0;
            border: none;
        }