:root {
            --primary-color: #1a237e;
            --secondary-color: #ffab00;
            --accent-color: #c62828;
            --text-dark: #333;
            --text-light: #f5f5f5;
            --bg-light: #f8f9fa;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.7;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #283593);
            color: var(--text-light);
            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: 2.2rem;
            font-weight: 900;
            color: var(--secondary-color);
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .my-logo:hover {
            color: #ffd54f;
            transform: scale(1.05);
        }
        .search-form {
            display: flex;
            max-width: 400px;
            flex-grow: 1;
            margin: 0 30px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 20px;
            border: none;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            background: rgba(255,255,255,0.9);
        }
        .search-form button {
            background: var(--secondary-color);
            color: var(--primary-color);
            border: none;
            border-radius: 0 30px 30px 0;
            padding: 0 25px;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #ffd54f;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--secondary-color);
        }
        nav ul {
            display: flex;
            list-style: none;
            background: rgba(0,0,0,0.2);
            border-radius: 8px;
            padding: 10px;
        }
        nav ul li {
            margin: 0 10px;
        }
        nav ul li a {
            padding: 10px 15px;
            border-radius: 5px;
            font-weight: 600;
            display: block;
        }
        nav ul li a:hover, nav ul li a.active {
            background: var(--secondary-color);
            color: var(--primary-color);
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #ccc;
        }
        .breadcrumb a {
            color: var(--secondary-color);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 30px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .content-area {
            background: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            border-radius: 12px;
            padding: 25px;
            box-shadow: var(--shadow);
            align-self: start;
        }
        h1 {
            color: var(--primary-color);
            font-size: 2.8rem;
            margin-bottom: 25px;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--primary-color);
            font-size: 2rem;
            margin: 35px 0 20px;
            padding-top: 10px;
            border-top: 1px dashed #ddd;
        }
        h3 {
            color: #444;
            font-size: 1.6rem;
            margin: 25px 0 15px;
        }
        h4 {
            color: #555;
            font-size: 1.3rem;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            background: #e3f2fd;
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 30px;
            border-left: 5px solid var(--primary-color);
        }
        .highlight {
            background-color: #fff9c4;
            padding: 5px 10px;
            border-radius: 4px;
            font-weight: bold;
        }
        .note {
            background-color: #f3e5f5;
            border-left: 5px solid #9c27b0;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .code-box {
            background: #263238;
            color: #eceff1;
            padding: 20px;
            border-radius: 8px;
            font-family: monospace;
            margin: 20px 0;
            overflow-x: auto;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary-color), #3949ab);
            color: white;
            padding: 15px 30px;
            border-radius: 50px;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin: 10px 5px;
            box-shadow: 0 4px 8px rgba(26, 35, 126, 0.3);
            transition: var(--transition);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(26, 35, 126, 0.4);
        }
        .btn-secondary {
            background: linear-gradient(to right, var(--secondary-color), #ffca28);
            color: var(--primary-color);
        }
        .img-container {
            margin: 30px 0;
            text-align: center;
        }
        .feature-img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 5px solid white;
        }
        .link-list {
            list-style: none;
            margin: 25px 0;
        }
        .link-list li {
            margin-bottom: 12px;
            padding-left: 25px;
            position: relative;
        }
        .link-list li:before {
            content: '🎮';
            position: absolute;
            left: 0;
        }
        .link-list a {
            color: var(--primary-color);
            font-weight: 600;
        }
        .link-list a:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }
        .sidebar h3 {
            color: var(--primary-color);
            margin-top: 0;
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar ul li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dotted #ddd;
        }
        .sidebar ul li:last-child {
            border-bottom: none;
        }
        .interaction {
            margin-top: 50px;
            background: #f5f5f5;
            padding: 30px;
            border-radius: 12px;
        }
        .interaction h2 {
            border-top: none;
            padding-top: 0;
        }
        .rating {
            display: flex;
            align-items: center;
            margin-bottom: 25px;
        }
        .stars {
            font-size: 2rem;
            color: #ffc107;
            margin-right: 20px;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        form {
            display: grid;
            gap: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 8px;
            font-weight: 600;
            color: #555;
        }
        input, textarea, select {
            padding: 15px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.2);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--accent-color);
            color: white;
            border: none;
            padding: 18px;
            font-size: 1.1rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background: #d32f2f;
        }
        footer {
            background: var(--primary-color);
            color: var(--text-light);
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 900;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }
        .footer-links h4 {
            color: var(--secondary-color);
            margin-bottom: 20px;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links ul li {
            margin-bottom: 12px;
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 15px 0;
            padding: 10px 15px;
            background: rgba(255,255,255,0.1);
            border-radius: 6px;
            border-left: 4px solid var(--secondary-color);
        }
        friend-link:hover {
            background: rgba(255,255,255,0.2);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                margin: 20px 0 0;
                max-width: 100%;
            }
            .mobile-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                order: 2;
                margin-top: 20px;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                padding: 0;
                background: transparent;
            }
            nav ul li {
                margin: 5px 0;
            }
            .content-area {
                padding: 25px;
            }
        }
        .update-time {
            font-style: italic;
            color: #777;
            text-align: right;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .strong {
            font-weight: 900;
            color: var(--primary-color);
        }
        .tag {
            display: inline-block;
            background: #e0e0e0;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            margin: 0 5px 5px 0;
        }