:root {
            --primary-blue: #1a6fb4;
            --secondary-teal: #2a9d8f;
            --accent-gold: #e9c46a;
            --dark-navy: #264653;
            --light-aqua: #a8dadc;
            --text-dark: #333333;
            --text-light: #f8f9fa;
            --gray-bg: #f5f7fa;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --border-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: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: #ffffff;
            overflow-x: hidden;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark-navy) 0%, var(--primary-blue) 100%);
            color: var(--text-light);
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
        }
        .my-logo {
            font-family: 'Comic Sans MS', cursive, sans-serif;
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-gold);
            text-decoration: none;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: #ffffff;
            transform: scale(1.05);
        }
        .my-logo i {
            font-size: 2rem;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .main-nav {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .nav-link {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link:hover {
            background-color: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .breadcrumb {
            background-color: var(--gray-bg);
            padding: 1rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #e0e0e0;
        }
        .breadcrumb a {
            color: var(--primary-blue);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-container {
            max-width: 800px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        .search-form {
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
            transition: var(--transition);
        }
        .search-form:focus-within {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            background-color: white;
        }
        .search-input:focus {
            outline: none;
        }
        .search-btn {
            background-color: var(--secondary-teal);
            color: white;
            border: none;
            padding: 0 1.8rem;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: var(--primary-blue);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 3rem 0;
        }
        .main-content {
            background-color: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background-color: var(--gray-bg);
            padding: 2rem;
            border-radius: var(--border-radius);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark-navy);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 5px solid var(--accent-gold);
            padding-left: 1.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-aqua);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary-teal);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--dark-navy);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .intro {
            font-size: 1.2rem;
            background: linear-gradient(to right, #f8f9fa, #e9f5ff);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
            border-left: 4px solid var(--secondary-teal);
        }
        .highlight {
            background-color: #fff9e6;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
            color: #d4a017;
        }
        .tip-box {
            background-color: #e8f4fd;
            border-left: 5px solid var(--primary-blue);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .warning-box {
            background-color: #fff2e6;
            border-left: 5px solid #e76f51;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .feature-item {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            transition: var(--transition);
            border-top: 4px solid var(--light-aqua);
        }
        .feature-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.12);
        }
        .feature-item i {
            color: var(--secondary-teal);
            font-size: 1.8rem;
            margin-bottom: 0.8rem;
        }
        .article-img {
            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-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            margin-bottom: 2rem;
        }
        .content-link {
            color: var(--primary-blue);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--primary-blue);
            transition: var(--transition);
        }
        .content-link:hover {
            color: var(--secondary-teal);
            border-bottom: 1px solid var(--secondary-teal);
        }
        .rating-section {
            background-color: var(--gray-bg);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            text-align: center;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1.5rem 0;
            font-size: 2rem;
            color: #ffc107;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.2);
        }
        .comment-form, .rating-form {
            max-width: 600px;
            margin: 2rem auto;
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-input, .form-textarea {
            padding: 0.9rem 1.2rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(26, 111, 180, 0.1);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--secondary-teal);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background-color: var(--primary-blue);
            transform: translateY(-2px);
        }
        .site-footer {
            background-color: var(--dark-navy);
            color: var(--text-light);
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-section h3 {
            color: var(--accent-gold);
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid rgba(233, 196, 106, 0.3);
            padding-bottom: 0.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cccccc;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-top: 2rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1rem;
        }
        .friend-links a {
            background-color: rgba(233, 196, 106, 0.2);
            color: var(--accent-gold);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .friend-links a:hover {
            background-color: var(--accent-gold);
            color: var(--dark-navy);
        }
        .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;
        }
        .update-time {
            background-color: #f0f8ff;
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            display: inline-block;
            margin: 1rem 0;
            font-size: 0.9rem;
            color: #555;
        }
        @media (max-width: 1024px) {
            .content-area {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                text-align: center;
                gap: 1rem;
            }
            .mobile-menu-btn {
                display: block;
                position: absolute;
                right: 2rem;
                top: 1.5rem;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.5rem;
            }
            .main-nav.active {
                display: flex;
            }
            .nav-link {
                justify-content: center;
                padding: 0.8rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .container, .site-header, .breadcrumb {
                padding: 1rem;
            }
            .main-content {
                padding: 1.5rem;
            }
            .feature-list {
                grid-template-columns: 1fr;
            }
            .footer-container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .friend-links {
                flex-direction: column;
            }
        }
        @media (max-width: 480px) {
            html {
                font-size: 14px;
            }
            .my-logo {
                font-size: 2rem;
            }
            .search-container {
                padding: 0 1rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: var(--border-radius);
            }
            .search-input, .search-btn {
                width: 100%;
                border-radius: 0;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }