:root {
            --primary: #00a8e1;
            --secondary: #ff6b9d;
            --dark: #1a1a2e;
            --light: #f8f9fa;
            --grey: #6c757d;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.8;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        .site-header {
            background-color: var(--dark);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            font-family: 'Arial Rounded MT Bold', sans-serif;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
            font-size: 2.2rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            transition: var(--transition);
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: var(--primary);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            background-color: #f1f3f5;
            padding: 1rem 2rem;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-container {
            max-width: 800px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        .search-box {
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-box input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #0088c2;
        }
        .main-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-content {
            background: white;
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: var(--radius);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 5px solid var(--primary);
            padding-left: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        h3 {
            font-size: 1.5rem;
            color: #444;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--grey);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fff9db;
            padding: 1.5rem;
            border-left: 4px solid #ffd43b;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .article-image:hover {
            transform: scale(1.01);
        }
        .link-list {
            background: #e9ecef;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
        }
        .link-list ul {
            columns: 2;
            list-style: none;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            break-inside: avoid;
        }
        .link-list a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .link-list a:hover {
            color: var(--primary);
            transform: translateX(5px);
        }
        .link-list i {
            color: var(--primary);
            font-size: 0.9rem;
        }
        .update-time {
            font-size: 0.9rem;
            color: var(--grey);
            font-style: italic;
            text-align: right;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px dashed #ddd;
        }
        .user-interaction {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: var(--radius);
            margin: 3rem 0;
        }
        .rating-section,
        .comment-section {
            margin-bottom: 2.5rem;
        }
        .rating-section h3,
        .comment-section h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 5px;
            margin-bottom: 1rem;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .comment-form textarea {
            width: 100%;
            height: 150px;
            padding: 1rem;
            border: 2px solid #dee2e6;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            margin-bottom: 1rem;
            resize: vertical;
            transition: var(--transition);
        }
        .comment-form textarea:focus {
            outline: none;
            border-color: var(--primary);
        }
        .submit-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .submit-btn:hover {
            background-color: #0088c2;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0, 168, 225, 0.3);
        }
        .site-footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-section h4 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin-top: 2rem;
        }
        friend-link h4 {
            color: var(--secondary);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background-color: var(--dark);
                flex-direction: column;
                align-items: center;
                padding-top: 3rem;
                transition: left 0.5s ease;
                z-index: 999;
            }
            .main-nav.active ul {
                left: 0;
            }
            .link-list ul {
                columns: 1;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }