:root {
            --primary-color: #6a5acd;
            --secondary-color: #ff69b4;
            --accent-color: #20b2aa;
            --text-dark: #333;
            --text-light: #f8f8ff;
            --bg-light: #f0f8ff;
            --bg-card: #fff;
            --shadow: 0 4px 12px rgba(106, 90, 205, 0.1);
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-light);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #9370db);
            color: var(--text-light);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
            color: white;
        }
        .my-logo i {
            color: var(--secondary-color);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .nav-desktop {
            display: flex;
            gap: 1.5rem;
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            background-color: rgba(255, 255, 255, 0.2);
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--primary-color);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background-color: #e6e6fa;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-dark);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background-color: var(--bg-card);
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--secondary-color);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent-color);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--primary-color);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--accent-color);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: #555;
            margin-bottom: 2rem;
        }
        strong {
            color: var(--primary-color);
            font-weight: 700;
        }
        em {
            color: var(--accent-color);
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(to right, #f0f8ff, #e6f7ff);
            border-left: 5px solid var(--accent-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 2rem auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1.5rem;
            margin-bottom: 2rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .interactive-section {
            background: linear-gradient(135deg, #f8f0ff, #fff0f8);
            padding: 2rem;
            border-radius: var(--radius);
            margin: 3rem 0;
            border: 2px dashed var(--secondary-color);
        }
        .interactive-section h3 {
            color: var(--secondary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        form {
            display: grid;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent-color);
        }
        button, .btn {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 50px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        button:hover, .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(106, 90, 205, 0.3);
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffd700;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: var(--bg-card);
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--secondary-color);
        }
        .related-links a {
            display: block;
            padding: 0.8rem 0;
            border-bottom: 1px solid #eee;
            color: var(--text-dark);
        }
        .related-links a:before {
            content: "▶";
            color: var(--accent-color);
            margin-right: 10px;
            font-size: 0.8rem;
        }
        .related-links a:hover {
            color: var(--primary-color);
            padding-left: 10px;
        }
        .update-time {
            font-size: 0.9rem;
            color: #777;
            background-color: #f9f9f9;
            padding: 1rem;
            border-radius: var(--radius);
            border-left: 4px solid var(--accent-color);
        }
        footer {
            background-color: #2a2a3a;
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-col h4 {
            color: var(--secondary-color);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #ccc;
        }
        friend-link a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-desktop {
                display: none;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 1.5rem;
            }
            .header-container, .footer-grid {
                flex-direction: column;
                text-align: center;
                gap: 1rem;
            }
        }