 12px;
        }

        .keyboard-hints.show {
            opacity: 1;
        }

        .keyboard-hints h6 {
            color: #007bff;
            margin-bottom: 10px;
        }

        .keyboard-hints div {
            margin-bottom: 5px;
        }

        .key {
            background: rgba(255,255,255,0.2);
            padding: 2px 6px;
            border-radius: 3px;
            font-family: monospace;
        }

        /* 缓存状态面板 */
        .cache-status {
            position: fixe