textarea.zh-area {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    min-height: 220px;
    resize: vertical;
}
#zh-toast {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 50;
    background: #1e293b;
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    display: none;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.2);
}
#zh-toast.show { display: block; }
.zh-mode-btn.active {
    background: #3b82f6 !important;
    color: #fff !important;
    border-color: #3b82f6 !important;
}