.result-number {
    font-size: 2.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    word-break: break-word;
    color: #0d6efd;
    background: #f8f9fc;
    padding: 0.75rem 1.5rem;
    border-radius: 1rem;
    display: inline-block;
    min-height: 4rem;
    box-shadow: inset 0 1px 4px rgba(0,0,0,0.02);
}
.history-item {
    transition: background-color 0.15s ease;
    border-left: 3px solid transparent;
}
.history-item:hover {
    background-color: #f1f3f5;
    border-left-color: #0d6efd;
}
.history-number {
    font-family: 'Courier New', monospace;
    font-weight: 500;
    background: #e9ecef;
    padding: 0.15rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.9rem;
}
.config-label {
    font-weight: 500;
    color: #495057;
    margin-bottom: 0.25rem;
}
.btn-generate {
    padding: 0.65rem 2rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}
/* 功能描述卡片样式 */
.feature-desc {
    background: #f8f9fa;
    border-left: 4px solid #0d6efd;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    color: #495057;
    margin-bottom: 1.5rem;
}
.feature-desc i {
    color: #0d6efd;
}
.tip-text {
    font-size: 0.8rem;
    color: #6c757d;
    margin-top: 0.25rem;
}
.switch-label {
    font-size: 0.9rem;
}