.tool-container {
    max-width: 1100px;
    margin: 30px auto;
    padding: 20px;
    background: #fff;
}
.header-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
    background: #f0f7ff;
    padding: 12px 16px;
    border-radius: 8px;
}
.header-bar label {
    font-size: 14px;
    color: #333;
    display: flex;
    align-items: center;
    gap: 4px;
}
.header-bar input[type="text"] {
    padding: 6px 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}
/* 强制原生复选框 */
.header-bar input[type="checkbox"] {
    appearance: checkbox !important;
    -webkit-appearance: checkbox !important;
    width: 16px;
    height: 16px;
    margin: 0;
}
.row-container {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.col-half {
    flex: 1;
    min-width: 400px;
}
.col-half h4 {
    margin: 0 0 10px;
    font-size: 15px;
    color: #333;
}
textarea {
    width: 100%;
    height: 400px;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: Consolas, Monaco, monospace;
    font-size: 13px;
    line-height: 1.5;
    box-sizing: border-box;
    resize: vertical;
}
textarea:focus {
    outline: none;
    border-color: #2d8cf0;
    box-shadow: 0 0 0 3px rgba(45,140,240,0.15);
}
.btn-bar {
    margin: 16px 0;
}
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    background: #2d8cf0;
    color: #fff;
    cursor: pointer;
    margin-right: 10px;
    font-size: 14px;
}
.btn:hover {
    background: #2478d8;
}
.btn-clear {
    background: #f56c6c;
}
.btn-clear:hover {
    background: #e05555;
}
.status-bar {
    margin-top: 12px;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 13px;
}
.status-success {
    background: #e8f8e8;
    color: #2d8f2d;
}
.status-error {
    background: #ffeaea;
    color: #c53939;
}
.rule-info {
    margin-top: 20px;
    font-size: 13px;
    color: #555;
    line-height: 1.6;
}